77581880

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{271}}^1\times {\mathrm{421}}^1$

素因数の和:720

約数の個数: 64

約数和(自身を含む): 185950080

約数和(自身を除く): 108368200

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 271, 340, 421, 542, 680, 842, 1084, 1355, 1684, 2105, 2168, 2710, 3368, 4210, 4607, 5420, 7157, 8420, 9214, 10840, 14314, 16840, 18428, 23035, 28628, 35785, 36856, 46070, 57256, 71570, 92140, 114091, 143140, 184280, 228182, 286280, 456364, 570455, 912728, 1140910, 1939547, 2281820, 3879094, 4563640, 7758188, 9697735, 15516376, 19395470, 38790940, 77581880]

約数ペア:

[(1, 77581880), (2, 38790940), (4, 19395470), (5, 15516376), (8, 9697735), (10, 7758188), (17, 4563640), (20, 3879094), (34, 2281820), (40, 1939547), (68, 1140910), (85, 912728), (136, 570455), (170, 456364), (271, 286280), (340, 228182), (421, 184280), (542, 143140), (680, 114091), (842, 92140), (1084, 71570), (1355, 57256), (1684, 46070), (2105, 36856), (2168, 35785), (2710, 28628), (3368, 23035), (4210, 18428), (4607, 16840), (5420, 14314), (7157, 10840), (8420, 9214)]