646940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{4621}}^1$

素因数の和:4637

約数の個数: 24

約数和(自身を含む): 1552992

約数和(自身を除く): 906052

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 4621, 9242, 18484, 23105, 32347, 46210, 64694, 92420, 129388, 161735, 323470, 646940]

約数ペア:

[(1, 646940), (2, 323470), (4, 161735), (5, 129388), (7, 92420), (10, 64694), (14, 46210), (20, 32347), (28, 23105), (35, 18484), (70, 9242), (140, 4621)]