1888897880

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{67751}}^1$

素因数の和:67820

約数の個数: 64

約数和(自身を含む): 4609846080

約数和(自身を除く): 2720948200

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 41, 68, 82, 85, 136, 164, 170, 205, 328, 340, 410, 680, 697, 820, 1394, 1640, 2788, 3485, 5576, 6970, 13940, 27880, 67751, 135502, 271004, 338755, 542008, 677510, 1151767, 1355020, 2303534, 2710040, 2777791, 4607068, 5555582, 5758835, 9214136, 11111164, 11517670, 13888955, 22222328, 23035340, 27777910, 46070680, 47222447, 55555820, 94444894, 111111640, 188889788, 236112235, 377779576, 472224470, 944448940, 1888897880]

約数ペア:

[(1, 1888897880), (2, 944448940), (4, 472224470), (5, 377779576), (8, 236112235), (10, 188889788), (17, 111111640), (20, 94444894), (34, 55555820), (40, 47222447), (41, 46070680), (68, 27777910), (82, 23035340), (85, 22222328), (136, 13888955), (164, 11517670), (170, 11111164), (205, 9214136), (328, 5758835), (340, 5555582), (410, 4607068), (680, 2777791), (697, 2710040), (820, 2303534), (1394, 1355020), (1640, 1151767), (2788, 677510), (3485, 542008), (5576, 338755), (6970, 271004), (13940, 135502), (27880, 67751)]