20542960

素因数分解:

$2^4\times 5^1\times {\mathrm{211}}^1\times {\mathrm{1217}}^1$

素因数の和:1441

約数の個数: 40

約数和(自身を含む): 48028176

約数和(自身を除く): 27485216

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 211, 422, 844, 1055, 1217, 1688, 2110, 2434, 3376, 4220, 4868, 6085, 8440, 9736, 12170, 16880, 19472, 24340, 48680, 97360, 256787, 513574, 1027148, 1283935, 2054296, 2567870, 4108592, 5135740, 10271480, 20542960]

約数ペア:

[(1, 20542960), (2, 10271480), (4, 5135740), (5, 4108592), (8, 2567870), (10, 2054296), (16, 1283935), (20, 1027148), (40, 513574), (80, 256787), (211, 97360), (422, 48680), (844, 24340), (1055, 19472), (1217, 16880), (1688, 12170), (2110, 9736), (2434, 8440), (3376, 6085), (4220, 4868)]