64754840

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{151}}^2$

素因数の和:384

約数の個数: 48

約数和(自身を含む): 148735440

約数和(自身を除く): 83980600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 151, 284, 302, 355, 568, 604, 710, 755, 1208, 1420, 1510, 2840, 3020, 6040, 10721, 21442, 22801, 42884, 45602, 53605, 85768, 91204, 107210, 114005, 182408, 214420, 228010, 428840, 456020, 912040, 1618871, 3237742, 6475484, 8094355, 12950968, 16188710, 32377420, 64754840]

約数ペア:

[(1, 64754840), (2, 32377420), (4, 16188710), (5, 12950968), (8, 8094355), (10, 6475484), (20, 3237742), (40, 1618871), (71, 912040), (142, 456020), (151, 428840), (284, 228010), (302, 214420), (355, 182408), (568, 114005), (604, 107210), (710, 91204), (755, 85768), (1208, 53605), (1420, 45602), (1510, 42884), (2840, 22801), (3020, 21442), (6040, 10721)]