31757960

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{389}}^1$

素因数の和:570

約数の個数: 64

約数和(自身を含む): 77641200

約数和(自身を除く): 45883240

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 157, 260, 314, 389, 520, 628, 778, 785, 1256, 1556, 1570, 1945, 2041, 3112, 3140, 3890, 4082, 5057, 6280, 7780, 8164, 10114, 10205, 15560, 16328, 20228, 20410, 25285, 40456, 40820, 50570, 61073, 81640, 101140, 122146, 202280, 244292, 305365, 488584, 610730, 793949, 1221460, 1587898, 2442920, 3175796, 3969745, 6351592, 7939490, 15878980, 31757960]

約数ペア:

[(1, 31757960), (2, 15878980), (4, 7939490), (5, 6351592), (8, 3969745), (10, 3175796), (13, 2442920), (20, 1587898), (26, 1221460), (40, 793949), (52, 610730), (65, 488584), (104, 305365), (130, 244292), (157, 202280), (260, 122146), (314, 101140), (389, 81640), (520, 61073), (628, 50570), (778, 40820), (785, 40456), (1256, 25285), (1556, 20410), (1570, 20228), (1945, 16328), (2041, 15560), (3112, 10205), (3140, 10114), (3890, 8164), (4082, 7780), (5057, 6280)]