81816280

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{13}}^3\times {\mathrm{19}}^1$

素因数の和:83

約数の個数: 192

約数和(自身を含む): 244188000

約数和(自身を除く): 162371720

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 19, 20, 26, 28, 35, 38, 40, 49, 52, 56, 65, 70, 76, 91, 95, 98, 104, 130, 133, 140, 152, 169, 182, 190, 196, 245, 247, 260, 266, 280, 338, 364, 380, 392, 455, 490, 494, 520, 532, 637, 665, 676, 728, 760, 845, 910, 931, 980, 988, 1064, 1183, 1235, 1274, 1330, 1352, 1690, 1729, 1820, 1862, 1960, 1976, 2197, 2366, 2470, 2548, 2660, 3185, 3211, 3380, 3458, 3640, 3724, 4394, 4655, 4732, 4940, 5096, 5320, 5915, 6370, 6422, 6760, 6916, 7448, 8281, 8645, 8788, 9310, 9464, 9880, 10985, 11830, 12103, 12740, 12844, 13832, 15379, 16055, 16562, 17290, 17576, 18620, 21970, 22477, 23660, 24206, 25480, 25688, 30758, 32110, 33124, 34580, 37240, 41405, 41743, 43940, 44954, 47320, 48412, 60515, 61516, 64220, 66248, 69160, 76895, 82810, 83486, 87880, 89908, 96824, 107653, 112385, 121030, 123032, 128440, 153790, 157339, 165620, 166972, 179816, 208715, 215306, 224770, 242060, 292201, 307580, 314678, 331240, 333944, 417430, 430612, 449540, 484120, 538265, 584402, 615160, 629356, 786695, 834860, 861224, 899080, 1076530, 1168804, 1258712, 1461005, 1573390, 1669720, 2045407, 2153060, 2337608, 2922010, 3146780, 4090814, 4306120, 5844020, 6293560, 8181628, 10227035, 11688040, 16363256, 20454070, 40908140, 81816280]

約数ペア:

[(1, 81816280), (2, 40908140), (4, 20454070), (5, 16363256), (7, 11688040), (8, 10227035), (10, 8181628), (13, 6293560), (14, 5844020), (19, 4306120), (20, 4090814), (26, 3146780), (28, 2922010), (35, 2337608), (38, 2153060), (40, 2045407), (49, 1669720), (52, 1573390), (56, 1461005), (65, 1258712), (70, 1168804), (76, 1076530), (91, 899080), (95, 861224), (98, 834860), (104, 786695), (130, 629356), (133, 615160), (140, 584402), (152, 538265), (169, 484120), (182, 449540), (190, 430612), (196, 417430), (245, 333944), (247, 331240), (260, 314678), (266, 307580), (280, 292201), (338, 242060), (364, 224770), (380, 215306), (392, 208715), (455, 179816), (490, 166972), (494, 165620), (520, 157339), (532, 153790), (637, 128440), (665, 123032), (676, 121030), (728, 112385), (760, 107653), (845, 96824), (910, 89908), (931, 87880), (980, 83486), (988, 82810), (1064, 76895), (1183, 69160), (1235, 66248), (1274, 64220), (1330, 61516), (1352, 60515), (1690, 48412), (1729, 47320), (1820, 44954), (1862, 43940), (1960, 41743), (1976, 41405), (2197, 37240), (2366, 34580), (2470, 33124), (2548, 32110), (2660, 30758), (3185, 25688), (3211, 25480), (3380, 24206), (3458, 23660), (3640, 22477), (3724, 21970), (4394, 18620), (4655, 17576), (4732, 17290), (4940, 16562), (5096, 16055), (5320, 15379), (5915, 13832), (6370, 12844), (6422, 12740), (6760, 12103), (6916, 11830), (7448, 10985), (8281, 9880), (8645, 9464), (8788, 9310)]