31455840

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^2$

素因数の和:173

約数の個数: 144

約数和(自身を含む): 108231984

約数和(自身を除く): 76776144

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 32, 39, 40, 48, 52, 60, 65, 71, 78, 80, 96, 104, 120, 130, 142, 156, 160, 195, 208, 213, 240, 260, 284, 312, 355, 390, 416, 426, 480, 520, 568, 624, 710, 780, 852, 923, 1040, 1065, 1136, 1248, 1420, 1560, 1704, 1846, 2080, 2130, 2272, 2769, 2840, 3120, 3408, 3692, 4260, 4615, 5041, 5538, 5680, 6240, 6816, 7384, 8520, 9230, 10082, 11076, 11360, 13845, 14768, 15123, 17040, 18460, 20164, 22152, 25205, 27690, 29536, 30246, 34080, 36920, 40328, 44304, 50410, 55380, 60492, 65533, 73840, 75615, 80656, 88608, 100820, 110760, 120984, 131066, 147680, 151230, 161312, 196599, 201640, 221520, 241968, 262132, 302460, 327665, 393198, 403280, 443040, 483936, 524264, 604920, 655330, 786396, 806560, 982995, 1048528, 1209840, 1310660, 1572792, 1965990, 2097056, 2419680, 2621320, 3145584, 3931980, 5242640, 6291168, 7863960, 10485280, 15727920, 31455840]

約数ペア:

[(1, 31455840), (2, 15727920), (3, 10485280), (4, 7863960), (5, 6291168), (6, 5242640), (8, 3931980), (10, 3145584), (12, 2621320), (13, 2419680), (15, 2097056), (16, 1965990), (20, 1572792), (24, 1310660), (26, 1209840), (30, 1048528), (32, 982995), (39, 806560), (40, 786396), (48, 655330), (52, 604920), (60, 524264), (65, 483936), (71, 443040), (78, 403280), (80, 393198), (96, 327665), (104, 302460), (120, 262132), (130, 241968), (142, 221520), (156, 201640), (160, 196599), (195, 161312), (208, 151230), (213, 147680), (240, 131066), (260, 120984), (284, 110760), (312, 100820), (355, 88608), (390, 80656), (416, 75615), (426, 73840), (480, 65533), (520, 60492), (568, 55380), (624, 50410), (710, 44304), (780, 40328), (852, 36920), (923, 34080), (1040, 30246), (1065, 29536), (1136, 27690), (1248, 25205), (1420, 22152), (1560, 20164), (1704, 18460), (1846, 17040), (2080, 15123), (2130, 14768), (2272, 13845), (2769, 11360), (2840, 11076), (3120, 10082), (3408, 9230), (3692, 8520), (4260, 7384), (4615, 6816), (5041, 6240), (5538, 5680)]