64081980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{199}}^1\times {\mathrm{1789}}^1$

素因数の和:2003

約数の個数: 72

約数和(自身を含む): 195468000

約数和(自身を除く): 131386020

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 199, 398, 597, 796, 995, 1194, 1789, 1791, 1990, 2388, 2985, 3578, 3582, 3980, 5367, 5970, 7156, 7164, 8945, 8955, 10734, 11940, 16101, 17890, 17910, 21468, 26835, 32202, 35780, 35820, 53670, 64404, 80505, 107340, 161010, 322020, 356011, 712022, 1068033, 1424044, 1780055, 2136066, 3204099, 3560110, 4272132, 5340165, 6408198, 7120220, 10680330, 12816396, 16020495, 21360660, 32040990, 64081980]

約数ペア:

[(1, 64081980), (2, 32040990), (3, 21360660), (4, 16020495), (5, 12816396), (6, 10680330), (9, 7120220), (10, 6408198), (12, 5340165), (15, 4272132), (18, 3560110), (20, 3204099), (30, 2136066), (36, 1780055), (45, 1424044), (60, 1068033), (90, 712022), (180, 356011), (199, 322020), (398, 161010), (597, 107340), (796, 80505), (995, 64404), (1194, 53670), (1789, 35820), (1791, 35780), (1990, 32202), (2388, 26835), (2985, 21468), (3578, 17910), (3582, 17890), (3980, 16101), (5367, 11940), (5970, 10734), (7156, 8955), (7164, 8945)]