18557680

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{421}}^1$

素因数の和:482

約数の個数: 80

約数和(自身を含む): 47095200

約数和(自身を除く): 28537520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 29, 38, 40, 58, 76, 80, 95, 116, 145, 152, 190, 232, 290, 304, 380, 421, 464, 551, 580, 760, 842, 1102, 1160, 1520, 1684, 2105, 2204, 2320, 2755, 3368, 4210, 4408, 5510, 6736, 7999, 8420, 8816, 11020, 12209, 15998, 16840, 22040, 24418, 31996, 33680, 39995, 44080, 48836, 61045, 63992, 79990, 97672, 122090, 127984, 159980, 195344, 231971, 244180, 319960, 463942, 488360, 639920, 927884, 976720, 1159855, 1855768, 2319710, 3711536, 4639420, 9278840, 18557680]

約数ペア:

[(1, 18557680), (2, 9278840), (4, 4639420), (5, 3711536), (8, 2319710), (10, 1855768), (16, 1159855), (19, 976720), (20, 927884), (29, 639920), (38, 488360), (40, 463942), (58, 319960), (76, 244180), (80, 231971), (95, 195344), (116, 159980), (145, 127984), (152, 122090), (190, 97672), (232, 79990), (290, 63992), (304, 61045), (380, 48836), (421, 44080), (464, 39995), (551, 33680), (580, 31996), (760, 24418), (842, 22040), (1102, 16840), (1160, 15998), (1520, 12209), (1684, 11020), (2105, 8816), (2204, 8420), (2320, 7999), (2755, 6736), (3368, 5510), (4210, 4408)]