20531355

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{499}}^1$

素因数の和:731

約数の個数: 32

約数和(自身を含む): 35616000

約数和(自身を除く): 15084645

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 211, 499, 633, 1055, 1497, 2495, 2743, 3165, 6487, 7485, 8229, 13715, 19461, 32435, 41145, 97305, 105289, 315867, 526445, 1368757, 1579335, 4106271, 6843785, 20531355]

約数ペア:

[(1, 20531355), (3, 6843785), (5, 4106271), (13, 1579335), (15, 1368757), (39, 526445), (65, 315867), (195, 105289), (211, 97305), (499, 41145), (633, 32435), (1055, 19461), (1497, 13715), (2495, 8229), (2743, 7485), (3165, 6487)]