21367920

素因数分解:

$2^4\times 3^1\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{79}}^1$

素因数の和:132

約数の個数: 240

約数和(自身を含む): 81423360

約数和(自身を除く): 60055440

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 23, 24, 28, 30, 35, 40, 42, 46, 48, 49, 56, 60, 69, 70, 79, 80, 84, 92, 98, 105, 112, 115, 120, 138, 140, 147, 158, 161, 168, 184, 196, 210, 230, 237, 240, 245, 276, 280, 294, 316, 322, 336, 345, 368, 392, 395, 420, 460, 474, 483, 490, 552, 553, 560, 588, 632, 644, 690, 735, 784, 790, 805, 840, 920, 948, 966, 980, 1104, 1106, 1127, 1176, 1185, 1264, 1288, 1380, 1470, 1580, 1610, 1659, 1680, 1817, 1840, 1896, 1932, 1960, 2212, 2254, 2352, 2370, 2415, 2576, 2760, 2765, 2940, 3160, 3220, 3318, 3381, 3634, 3792, 3864, 3871, 3920, 4424, 4508, 4740, 4830, 5451, 5520, 5530, 5635, 5880, 6320, 6440, 6636, 6762, 7268, 7728, 7742, 8295, 8848, 9016, 9085, 9480, 9660, 10902, 11060, 11270, 11613, 11760, 12719, 12880, 13272, 13524, 14536, 15484, 16590, 16905, 18032, 18170, 18960, 19320, 19355, 21804, 22120, 22540, 23226, 25438, 26544, 27048, 27255, 29072, 30968, 33180, 33810, 36340, 38157, 38640, 38710, 43608, 44240, 45080, 46452, 50876, 54096, 54510, 58065, 61936, 63595, 66360, 67620, 72680, 76314, 77420, 87216, 89033, 90160, 92904, 101752, 109020, 116130, 127190, 132720, 135240, 145360, 152628, 154840, 178066, 185808, 190785, 203504, 218040, 232260, 254380, 267099, 270480, 305256, 309680, 356132, 381570, 436080, 445165, 464520, 508760, 534198, 610512, 712264, 763140, 890330, 929040, 1017520, 1068396, 1335495, 1424528, 1526280, 1780660, 2136792, 2670990, 3052560, 3561320, 4273584, 5341980, 7122640, 10683960, 21367920]

約数ペア:

[(1, 21367920), (2, 10683960), (3, 7122640), (4, 5341980), (5, 4273584), (6, 3561320), (7, 3052560), (8, 2670990), (10, 2136792), (12, 1780660), (14, 1526280), (15, 1424528), (16, 1335495), (20, 1068396), (21, 1017520), (23, 929040), (24, 890330), (28, 763140), (30, 712264), (35, 610512), (40, 534198), (42, 508760), (46, 464520), (48, 445165), (49, 436080), (56, 381570), (60, 356132), (69, 309680), (70, 305256), (79, 270480), (80, 267099), (84, 254380), (92, 232260), (98, 218040), (105, 203504), (112, 190785), (115, 185808), (120, 178066), (138, 154840), (140, 152628), (147, 145360), (158, 135240), (161, 132720), (168, 127190), (184, 116130), (196, 109020), (210, 101752), (230, 92904), (237, 90160), (240, 89033), (245, 87216), (276, 77420), (280, 76314), (294, 72680), (316, 67620), (322, 66360), (336, 63595), (345, 61936), (368, 58065), (392, 54510), (395, 54096), (420, 50876), (460, 46452), (474, 45080), (483, 44240), (490, 43608), (552, 38710), (553, 38640), (560, 38157), (588, 36340), (632, 33810), (644, 33180), (690, 30968), (735, 29072), (784, 27255), (790, 27048), (805, 26544), (840, 25438), (920, 23226), (948, 22540), (966, 22120), (980, 21804), (1104, 19355), (1106, 19320), (1127, 18960), (1176, 18170), (1185, 18032), (1264, 16905), (1288, 16590), (1380, 15484), (1470, 14536), (1580, 13524), (1610, 13272), (1659, 12880), (1680, 12719), (1817, 11760), (1840, 11613), (1896, 11270), (1932, 11060), (1960, 10902), (2212, 9660), (2254, 9480), (2352, 9085), (2370, 9016), (2415, 8848), (2576, 8295), (2760, 7742), (2765, 7728), (2940, 7268), (3160, 6762), (3220, 6636), (3318, 6440), (3381, 6320), (3634, 5880), (3792, 5635), (3864, 5530), (3871, 5520), (3920, 5451), (4424, 4830), (4508, 4740)]