18238480

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{71}}^1$

素因数の和:129

約数の個数: 120

約数和(自身を含む): 49014720

約数和(自身を除く): 30776240

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 38, 40, 52, 65, 71, 76, 80, 95, 104, 130, 142, 152, 169, 190, 208, 247, 260, 284, 304, 338, 355, 380, 494, 520, 568, 676, 710, 760, 845, 923, 988, 1040, 1136, 1235, 1349, 1352, 1420, 1520, 1690, 1846, 1976, 2470, 2698, 2704, 2840, 3211, 3380, 3692, 3952, 4615, 4940, 5396, 5680, 6422, 6745, 6760, 7384, 9230, 9880, 10792, 11999, 12844, 13490, 13520, 14768, 16055, 17537, 18460, 19760, 21584, 23998, 25688, 26980, 32110, 35074, 36920, 47996, 51376, 53960, 59995, 64220, 70148, 73840, 87685, 95992, 107920, 119990, 128440, 140296, 175370, 191984, 227981, 239980, 256880, 280592, 350740, 455962, 479960, 701480, 911924, 959920, 1139905, 1402960, 1823848, 2279810, 3647696, 4559620, 9119240, 18238480]

約数ペア:

[(1, 18238480), (2, 9119240), (4, 4559620), (5, 3647696), (8, 2279810), (10, 1823848), (13, 1402960), (16, 1139905), (19, 959920), (20, 911924), (26, 701480), (38, 479960), (40, 455962), (52, 350740), (65, 280592), (71, 256880), (76, 239980), (80, 227981), (95, 191984), (104, 175370), (130, 140296), (142, 128440), (152, 119990), (169, 107920), (190, 95992), (208, 87685), (247, 73840), (260, 70148), (284, 64220), (304, 59995), (338, 53960), (355, 51376), (380, 47996), (494, 36920), (520, 35074), (568, 32110), (676, 26980), (710, 25688), (760, 23998), (845, 21584), (923, 19760), (988, 18460), (1040, 17537), (1136, 16055), (1235, 14768), (1349, 13520), (1352, 13490), (1420, 12844), (1520, 11999), (1690, 10792), (1846, 9880), (1976, 9230), (2470, 7384), (2698, 6760), (2704, 6745), (2840, 6422), (3211, 5680), (3380, 5396), (3692, 4940), (3952, 4615)]