20210820195

素因数分解:

$3^1\times 5^1\times {\mathrm{137}}^1\times {\mathrm{557}}^1\times {\mathrm{17657}}^1$

素因数の和:18359

約数の個数: 32

約数和(自身を含む): 32633679168

約数和(自身を除く): 12422858973

約数列:

[1, 3, 5, 15, 137, 411, 557, 685, 1671, 2055, 2785, 8355, 17657, 52971, 76309, 88285, 228927, 264855, 381545, 1144635, 2419009, 7257027, 9834949, 12095045, 29504847, 36285135, 49174745, 147524235, 1347388013, 4042164039, 6736940065, 20210820195]

約数ペア:

[(1, 20210820195), (3, 6736940065), (5, 4042164039), (15, 1347388013), (137, 147524235), (411, 49174745), (557, 36285135), (685, 29504847), (1671, 12095045), (2055, 9834949), (2785, 7257027), (8355, 2419009), (17657, 1144635), (52971, 381545), (76309, 264855), (88285, 228927)]