20011895

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1$

素因数の和:191

約数の個数: 32

約数和(自身を含む): 26320896

約数和(自身を除く): 6309001

約数列:

[1, 5, 31, 41, 47, 67, 155, 205, 235, 335, 1271, 1457, 1927, 2077, 2747, 3149, 6355, 7285, 9635, 10385, 13735, 15745, 59737, 85157, 97619, 129109, 298685, 425785, 488095, 645545, 4002379, 20011895]

約数ペア:

[(1, 20011895), (5, 4002379), (31, 645545), (41, 488095), (47, 425785), (67, 298685), (155, 129109), (205, 97619), (235, 85157), (335, 59737), (1271, 15745), (1457, 13735), (1927, 10385), (2077, 9635), (2747, 7285), (3149, 6355)]