21156155840

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{139}}^1\times {\mathrm{229}}^1$

素因数の和:483

約数の個数: 224

約数和(自身を含む): 53391206400

約数和(自身を除く): 32235050560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 67, 80, 124, 134, 139, 155, 160, 229, 248, 268, 278, 310, 320, 335, 458, 496, 536, 556, 620, 670, 695, 916, 992, 1072, 1112, 1145, 1240, 1340, 1390, 1832, 1984, 2077, 2144, 2224, 2290, 2480, 2680, 2780, 3664, 4154, 4288, 4309, 4448, 4580, 4960, 5360, 5560, 7099, 7328, 8308, 8618, 8896, 9160, 9313, 9920, 10385, 10720, 11120, 14198, 14656, 15343, 16616, 17236, 18320, 18626, 20770, 21440, 21545, 22240, 28396, 30686, 31831, 33232, 34472, 35495, 36640, 37252, 41540, 43090, 44480, 46565, 56792, 61372, 63662, 66464, 68944, 70990, 73280, 74504, 76715, 83080, 86180, 93130, 113584, 122744, 127324, 132928, 137888, 141980, 149008, 153430, 159155, 166160, 172360, 186260, 227168, 245488, 254648, 275776, 283960, 288703, 298016, 306860, 318310, 332320, 344720, 372520, 454336, 475633, 490976, 509296, 567920, 577406, 596032, 613720, 636620, 664640, 689440, 745040, 951266, 981952, 986761, 1018592, 1135840, 1154812, 1227440, 1273240, 1378880, 1443515, 1490080, 1902532, 1973522, 2037184, 2132677, 2271680, 2309624, 2378165, 2454880, 2546480, 2887030, 2980160, 3805064, 3947044, 4265354, 4619248, 4756330, 4909760, 4933805, 5092960, 5774060, 7610128, 7894088, 8530708, 9238496, 9512660, 9867610, 10185920, 10663385, 11548120, 15220256, 15788176, 17061416, 18476992, 19025320, 19735220, 21326770, 23096240, 30440512, 31576352, 34122832, 38050640, 39470440, 42653540, 46192480, 63152704, 66112987, 68245664, 76101280, 78940880, 85307080, 92384960, 132225974, 136491328, 152202560, 157881760, 170614160, 264451948, 315763520, 330564935, 341228320, 528903896, 661129870, 682456640, 1057807792, 1322259740, 2115615584, 2644519480, 4231231168, 5289038960, 10578077920, 21156155840]

約数ペア:

[(1, 21156155840), (2, 10578077920), (4, 5289038960), (5, 4231231168), (8, 2644519480), (10, 2115615584), (16, 1322259740), (20, 1057807792), (31, 682456640), (32, 661129870), (40, 528903896), (62, 341228320), (64, 330564935), (67, 315763520), (80, 264451948), (124, 170614160), (134, 157881760), (139, 152202560), (155, 136491328), (160, 132225974), (229, 92384960), (248, 85307080), (268, 78940880), (278, 76101280), (310, 68245664), (320, 66112987), (335, 63152704), (458, 46192480), (496, 42653540), (536, 39470440), (556, 38050640), (620, 34122832), (670, 31576352), (695, 30440512), (916, 23096240), (992, 21326770), (1072, 19735220), (1112, 19025320), (1145, 18476992), (1240, 17061416), (1340, 15788176), (1390, 15220256), (1832, 11548120), (1984, 10663385), (2077, 10185920), (2144, 9867610), (2224, 9512660), (2290, 9238496), (2480, 8530708), (2680, 7894088), (2780, 7610128), (3664, 5774060), (4154, 5092960), (4288, 4933805), (4309, 4909760), (4448, 4756330), (4580, 4619248), (4960, 4265354), (5360, 3947044), (5560, 3805064), (7099, 2980160), (7328, 2887030), (8308, 2546480), (8618, 2454880), (8896, 2378165), (9160, 2309624), (9313, 2271680), (9920, 2132677), (10385, 2037184), (10720, 1973522), (11120, 1902532), (14198, 1490080), (14656, 1443515), (15343, 1378880), (16616, 1273240), (17236, 1227440), (18320, 1154812), (18626, 1135840), (20770, 1018592), (21440, 986761), (21545, 981952), (22240, 951266), (28396, 745040), (30686, 689440), (31831, 664640), (33232, 636620), (34472, 613720), (35495, 596032), (36640, 577406), (37252, 567920), (41540, 509296), (43090, 490976), (44480, 475633), (46565, 454336), (56792, 372520), (61372, 344720), (63662, 332320), (66464, 318310), (68944, 306860), (70990, 298016), (73280, 288703), (74504, 283960), (76715, 275776), (83080, 254648), (86180, 245488), (93130, 227168), (113584, 186260), (122744, 172360), (127324, 166160), (132928, 159155), (137888, 153430), (141980, 149008)]