128899640

素因数分解:

$2^3\times 5^1\times {\mathrm{151}}^1\times {\mathrm{21341}}^1$

素因数の和:21503

約数の個数: 32

約数和(自身を含む): 291958560

約数和(自身を除く): 163058920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 151, 302, 604, 755, 1208, 1510, 3020, 6040, 21341, 42682, 85364, 106705, 170728, 213410, 426820, 853640, 3222491, 6444982, 12889964, 16112455, 25779928, 32224910, 64449820, 128899640]

約数ペア:

[(1, 128899640), (2, 64449820), (4, 32224910), (5, 25779928), (8, 16112455), (10, 12889964), (20, 6444982), (40, 3222491), (151, 853640), (302, 426820), (604, 213410), (755, 170728), (1208, 106705), (1510, 85364), (3020, 42682), (6040, 21341)]