66687640

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{151}}^1\times {\mathrm{181}}^1$

素因数の和:404

約数の個数: 64

約数和(自身を含む): 154365120

約数和(自身を除く): 87677480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 151, 181, 244, 302, 305, 362, 488, 604, 610, 724, 755, 905, 1208, 1220, 1448, 1510, 1810, 2440, 3020, 3620, 6040, 7240, 9211, 11041, 18422, 22082, 27331, 36844, 44164, 46055, 54662, 55205, 73688, 88328, 92110, 109324, 110410, 136655, 184220, 218648, 220820, 273310, 368440, 441640, 546620, 1093240, 1667191, 3334382, 6668764, 8335955, 13337528, 16671910, 33343820, 66687640]

約数ペア:

[(1, 66687640), (2, 33343820), (4, 16671910), (5, 13337528), (8, 8335955), (10, 6668764), (20, 3334382), (40, 1667191), (61, 1093240), (122, 546620), (151, 441640), (181, 368440), (244, 273310), (302, 220820), (305, 218648), (362, 184220), (488, 136655), (604, 110410), (610, 109324), (724, 92110), (755, 88328), (905, 73688), (1208, 55205), (1220, 54662), (1448, 46055), (1510, 44164), (1810, 36844), (2440, 27331), (3020, 22082), (3620, 18422), (6040, 11041), (7240, 9211)]