81365960

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{4229}}^1$

素因数の和:4290

約数の個数: 64

約数和(自身を含む): 202532400

約数和(自身を除く): 121166440

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 37, 40, 52, 65, 74, 104, 130, 148, 185, 260, 296, 370, 481, 520, 740, 962, 1480, 1924, 2405, 3848, 4229, 4810, 8458, 9620, 16916, 19240, 21145, 33832, 42290, 54977, 84580, 109954, 156473, 169160, 219908, 274885, 312946, 439816, 549770, 625892, 782365, 1099540, 1251784, 1564730, 2034149, 2199080, 3129460, 4068298, 6258920, 8136596, 10170745, 16273192, 20341490, 40682980, 81365960]

約数ペア:

[(1, 81365960), (2, 40682980), (4, 20341490), (5, 16273192), (8, 10170745), (10, 8136596), (13, 6258920), (20, 4068298), (26, 3129460), (37, 2199080), (40, 2034149), (52, 1564730), (65, 1251784), (74, 1099540), (104, 782365), (130, 625892), (148, 549770), (185, 439816), (260, 312946), (296, 274885), (370, 219908), (481, 169160), (520, 156473), (740, 109954), (962, 84580), (1480, 54977), (1924, 42290), (2405, 33832), (3848, 21145), (4229, 19240), (4810, 16916), (8458, 9620)]