129660640

素因数分解:

$2^5\times 5^1\times {\mathrm{810379}}^1$

素因数の和:810394

約数の個数: 24

約数和(自身を含む): 306323640

約数和(自身を除く): 176663000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 810379, 1620758, 3241516, 4051895, 6483032, 8103790, 12966064, 16207580, 25932128, 32415160, 64830320, 129660640]

約数ペア:

[(1, 129660640), (2, 64830320), (4, 32415160), (5, 25932128), (8, 16207580), (10, 12966064), (16, 8103790), (20, 6483032), (32, 4051895), (40, 3241516), (80, 1620758), (160, 810379)]