881691880

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{421}}^1\times {\mathrm{1277}}^1$

素因数の和:1750

約数の個数: 64

約数和(自身を含む): 2038614480

約数和(自身を除く): 1156922600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 421, 820, 842, 1277, 1640, 1684, 2105, 2554, 3368, 4210, 5108, 6385, 8420, 10216, 12770, 16840, 17261, 25540, 34522, 51080, 52357, 69044, 86305, 104714, 138088, 172610, 209428, 261785, 345220, 418856, 523570, 537617, 690440, 1047140, 1075234, 2094280, 2150468, 2688085, 4300936, 5376170, 10752340, 21504680, 22042297, 44084594, 88169188, 110211485, 176338376, 220422970, 440845940, 881691880]

約数ペア:

[(1, 881691880), (2, 440845940), (4, 220422970), (5, 176338376), (8, 110211485), (10, 88169188), (20, 44084594), (40, 22042297), (41, 21504680), (82, 10752340), (164, 5376170), (205, 4300936), (328, 2688085), (410, 2150468), (421, 2094280), (820, 1075234), (842, 1047140), (1277, 690440), (1640, 537617), (1684, 523570), (2105, 418856), (2554, 345220), (3368, 261785), (4210, 209428), (5108, 172610), (6385, 138088), (8420, 104714), (10216, 86305), (12770, 69044), (16840, 52357), (17261, 51080), (25540, 34522)]