31194280

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{251}}^1$

素因数の和:514

約数の個数: 64

約数和(自身を含む): 76204800

約数和(自身を除く): 45010520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 239, 251, 260, 478, 502, 520, 956, 1004, 1195, 1255, 1912, 2008, 2390, 2510, 3107, 3263, 4780, 5020, 6214, 6526, 9560, 10040, 12428, 13052, 15535, 16315, 24856, 26104, 31070, 32630, 59989, 62140, 65260, 119978, 124280, 130520, 239956, 299945, 479912, 599890, 779857, 1199780, 1559714, 2399560, 3119428, 3899285, 6238856, 7798570, 15597140, 31194280]

約数ペア:

[(1, 31194280), (2, 15597140), (4, 7798570), (5, 6238856), (8, 3899285), (10, 3119428), (13, 2399560), (20, 1559714), (26, 1199780), (40, 779857), (52, 599890), (65, 479912), (104, 299945), (130, 239956), (239, 130520), (251, 124280), (260, 119978), (478, 65260), (502, 62140), (520, 59989), (956, 32630), (1004, 31070), (1195, 26104), (1255, 24856), (1912, 16315), (2008, 15535), (2390, 13052), (2510, 12428), (3107, 10040), (3263, 9560), (4780, 6526), (5020, 6214)]