21240960

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1$

素因数の和:95

約数の個数: 256

約数和(自身を含む): 78140160

約数和(自身を除く): 56899200

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 23, 24, 26, 30, 32, 37, 39, 40, 46, 48, 52, 60, 64, 65, 69, 74, 78, 80, 92, 96, 104, 111, 115, 120, 128, 130, 138, 148, 156, 160, 184, 185, 192, 195, 208, 222, 230, 240, 260, 276, 296, 299, 312, 320, 345, 368, 370, 384, 390, 416, 444, 460, 480, 481, 520, 552, 555, 592, 598, 624, 640, 690, 736, 740, 780, 832, 851, 888, 897, 920, 960, 962, 1040, 1104, 1110, 1184, 1196, 1248, 1380, 1443, 1472, 1480, 1495, 1560, 1664, 1702, 1776, 1794, 1840, 1920, 1924, 2080, 2208, 2220, 2368, 2392, 2405, 2496, 2553, 2760, 2886, 2944, 2960, 2990, 3120, 3404, 3552, 3588, 3680, 3848, 4160, 4255, 4416, 4440, 4485, 4736, 4784, 4810, 4992, 5106, 5520, 5772, 5920, 5980, 6240, 6808, 7104, 7176, 7215, 7360, 7696, 8320, 8510, 8832, 8880, 8970, 9568, 9620, 10212, 11040, 11063, 11544, 11840, 11960, 12480, 12765, 13616, 14208, 14352, 14430, 14720, 15392, 17020, 17760, 17940, 19136, 19240, 20424, 22080, 22126, 23088, 23680, 23920, 24960, 25530, 27232, 28704, 28860, 30784, 33189, 34040, 35520, 35880, 38272, 38480, 40848, 44160, 44252, 46176, 47840, 51060, 54464, 55315, 57408, 57720, 61568, 66378, 68080, 71040, 71760, 76960, 81696, 88504, 92352, 95680, 102120, 108928, 110630, 114816, 115440, 132756, 136160, 143520, 153920, 163392, 165945, 177008, 184704, 191360, 204240, 221260, 230880, 265512, 272320, 287040, 307840, 326784, 331890, 354016, 408480, 442520, 461760, 531024, 544640, 574080, 663780, 708032, 816960, 885040, 923520, 1062048, 1327560, 1416064, 1633920, 1770080, 2124096, 2655120, 3540160, 4248192, 5310240, 7080320, 10620480, 21240960]

約数ペア:

[(1, 21240960), (2, 10620480), (3, 7080320), (4, 5310240), (5, 4248192), (6, 3540160), (8, 2655120), (10, 2124096), (12, 1770080), (13, 1633920), (15, 1416064), (16, 1327560), (20, 1062048), (23, 923520), (24, 885040), (26, 816960), (30, 708032), (32, 663780), (37, 574080), (39, 544640), (40, 531024), (46, 461760), (48, 442520), (52, 408480), (60, 354016), (64, 331890), (65, 326784), (69, 307840), (74, 287040), (78, 272320), (80, 265512), (92, 230880), (96, 221260), (104, 204240), (111, 191360), (115, 184704), (120, 177008), (128, 165945), (130, 163392), (138, 153920), (148, 143520), (156, 136160), (160, 132756), (184, 115440), (185, 114816), (192, 110630), (195, 108928), (208, 102120), (222, 95680), (230, 92352), (240, 88504), (260, 81696), (276, 76960), (296, 71760), (299, 71040), (312, 68080), (320, 66378), (345, 61568), (368, 57720), (370, 57408), (384, 55315), (390, 54464), (416, 51060), (444, 47840), (460, 46176), (480, 44252), (481, 44160), (520, 40848), (552, 38480), (555, 38272), (592, 35880), (598, 35520), (624, 34040), (640, 33189), (690, 30784), (736, 28860), (740, 28704), (780, 27232), (832, 25530), (851, 24960), (888, 23920), (897, 23680), (920, 23088), (960, 22126), (962, 22080), (1040, 20424), (1104, 19240), (1110, 19136), (1184, 17940), (1196, 17760), (1248, 17020), (1380, 15392), (1443, 14720), (1472, 14430), (1480, 14352), (1495, 14208), (1560, 13616), (1664, 12765), (1702, 12480), (1776, 11960), (1794, 11840), (1840, 11544), (1920, 11063), (1924, 11040), (2080, 10212), (2208, 9620), (2220, 9568), (2368, 8970), (2392, 8880), (2405, 8832), (2496, 8510), (2553, 8320), (2760, 7696), (2886, 7360), (2944, 7215), (2960, 7176), (2990, 7104), (3120, 6808), (3404, 6240), (3552, 5980), (3588, 5920), (3680, 5772), (3848, 5520), (4160, 5106), (4255, 4992), (4416, 4810), (4440, 4784), (4485, 4736)]