81438240

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{421}}^1$

素因数の和:483

約数の個数: 192

約数和(自身を含む): 285852672

約数和(自身を除く): 204414432

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 31, 32, 39, 40, 48, 52, 60, 62, 65, 78, 80, 93, 96, 104, 120, 124, 130, 155, 156, 160, 186, 195, 208, 240, 248, 260, 310, 312, 372, 390, 403, 416, 421, 465, 480, 496, 520, 620, 624, 744, 780, 806, 842, 930, 992, 1040, 1209, 1240, 1248, 1263, 1488, 1560, 1612, 1684, 1860, 2015, 2080, 2105, 2418, 2480, 2526, 2976, 3120, 3224, 3368, 3720, 4030, 4210, 4836, 4960, 5052, 5473, 6045, 6240, 6315, 6448, 6736, 7440, 8060, 8420, 9672, 10104, 10946, 12090, 12630, 12896, 13051, 13472, 14880, 16120, 16419, 16840, 19344, 20208, 21892, 24180, 25260, 26102, 27365, 32240, 32838, 33680, 38688, 39153, 40416, 43784, 48360, 50520, 52204, 54730, 64480, 65255, 65676, 67360, 78306, 82095, 87568, 96720, 101040, 104408, 109460, 130510, 131352, 156612, 164190, 169663, 175136, 193440, 195765, 202080, 208816, 218920, 261020, 262704, 313224, 328380, 339326, 391530, 417632, 437840, 508989, 522040, 525408, 626448, 656760, 678652, 783060, 848315, 875680, 1017978, 1044080, 1252896, 1313520, 1357304, 1566120, 1696630, 2035956, 2088160, 2544945, 2627040, 2714608, 3132240, 3393260, 4071912, 5089890, 5429216, 6264480, 6786520, 8143824, 10179780, 13573040, 16287648, 20359560, 27146080, 40719120, 81438240]

約数ペア:

[(1, 81438240), (2, 40719120), (3, 27146080), (4, 20359560), (5, 16287648), (6, 13573040), (8, 10179780), (10, 8143824), (12, 6786520), (13, 6264480), (15, 5429216), (16, 5089890), (20, 4071912), (24, 3393260), (26, 3132240), (30, 2714608), (31, 2627040), (32, 2544945), (39, 2088160), (40, 2035956), (48, 1696630), (52, 1566120), (60, 1357304), (62, 1313520), (65, 1252896), (78, 1044080), (80, 1017978), (93, 875680), (96, 848315), (104, 783060), (120, 678652), (124, 656760), (130, 626448), (155, 525408), (156, 522040), (160, 508989), (186, 437840), (195, 417632), (208, 391530), (240, 339326), (248, 328380), (260, 313224), (310, 262704), (312, 261020), (372, 218920), (390, 208816), (403, 202080), (416, 195765), (421, 193440), (465, 175136), (480, 169663), (496, 164190), (520, 156612), (620, 131352), (624, 130510), (744, 109460), (780, 104408), (806, 101040), (842, 96720), (930, 87568), (992, 82095), (1040, 78306), (1209, 67360), (1240, 65676), (1248, 65255), (1263, 64480), (1488, 54730), (1560, 52204), (1612, 50520), (1684, 48360), (1860, 43784), (2015, 40416), (2080, 39153), (2105, 38688), (2418, 33680), (2480, 32838), (2526, 32240), (2976, 27365), (3120, 26102), (3224, 25260), (3368, 24180), (3720, 21892), (4030, 20208), (4210, 19344), (4836, 16840), (4960, 16419), (5052, 16120), (5473, 14880), (6045, 13472), (6240, 13051), (6315, 12896), (6448, 12630), (6736, 12090), (7440, 10946), (8060, 10104), (8420, 9672)]