20122039945

素因数分解:

$5^1\times 7^1\times {\mathrm{1787}}^1\times {\mathrm{321721}}^1$

素因数の和:323520

約数の個数: 16

約数和(自身を含む): 27611468928

約数和(自身を除く): 7489428983

約数列:

[1, 5, 7, 35, 1787, 8935, 12509, 62545, 321721, 1608605, 2252047, 11260235, 574915427, 2874577135, 4024407989, 20122039945]

約数ペア:

[(1, 20122039945), (5, 4024407989), (7, 2874577135), (35, 574915427), (1787, 11260235), (8935, 2252047), (12509, 1608605), (62545, 321721)]