18535920

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{457}}^1$

素因数の和:499

約数の個数: 120

約数和(自身を含む): 62357616

約数和(自身を除く): 43821696

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 169, 195, 208, 240, 260, 312, 338, 390, 457, 507, 520, 624, 676, 780, 845, 914, 1014, 1040, 1352, 1371, 1560, 1690, 1828, 2028, 2285, 2535, 2704, 2742, 3120, 3380, 3656, 4056, 4570, 5070, 5484, 5941, 6760, 6855, 7312, 8112, 9140, 10140, 10968, 11882, 13520, 13710, 17823, 18280, 20280, 21936, 23764, 27420, 29705, 35646, 36560, 40560, 47528, 54840, 59410, 71292, 77233, 89115, 95056, 109680, 118820, 142584, 154466, 178230, 231699, 237640, 285168, 308932, 356460, 386165, 463398, 475280, 617864, 712920, 772330, 926796, 1158495, 1235728, 1425840, 1544660, 1853592, 2316990, 3089320, 3707184, 4633980, 6178640, 9267960, 18535920]

約数ペア:

[(1, 18535920), (2, 9267960), (3, 6178640), (4, 4633980), (5, 3707184), (6, 3089320), (8, 2316990), (10, 1853592), (12, 1544660), (13, 1425840), (15, 1235728), (16, 1158495), (20, 926796), (24, 772330), (26, 712920), (30, 617864), (39, 475280), (40, 463398), (48, 386165), (52, 356460), (60, 308932), (65, 285168), (78, 237640), (80, 231699), (104, 178230), (120, 154466), (130, 142584), (156, 118820), (169, 109680), (195, 95056), (208, 89115), (240, 77233), (260, 71292), (312, 59410), (338, 54840), (390, 47528), (457, 40560), (507, 36560), (520, 35646), (624, 29705), (676, 27420), (780, 23764), (845, 21936), (914, 20280), (1014, 18280), (1040, 17823), (1352, 13710), (1371, 13520), (1560, 11882), (1690, 10968), (1828, 10140), (2028, 9140), (2285, 8112), (2535, 7312), (2704, 6855), (2742, 6760), (3120, 5941), (3380, 5484), (3656, 5070), (4056, 4570)]