128622320

素因数分解:

$2^4\times 5^1\times {\mathrm{409}}^1\times {\mathrm{3931}}^1$

素因数の和:4353

約数の個数: 40

約数和(自身を含む): 299854320

約数和(自身を除く): 171232000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 409, 818, 1636, 2045, 3272, 3931, 4090, 6544, 7862, 8180, 15724, 16360, 19655, 31448, 32720, 39310, 62896, 78620, 157240, 314480, 1607779, 3215558, 6431116, 8038895, 12862232, 16077790, 25724464, 32155580, 64311160, 128622320]

約数ペア:

[(1, 128622320), (2, 64311160), (4, 32155580), (5, 25724464), (8, 16077790), (10, 12862232), (16, 8038895), (20, 6431116), (40, 3215558), (80, 1607779), (409, 314480), (818, 157240), (1636, 78620), (2045, 62896), (3272, 39310), (3931, 32720), (4090, 31448), (6544, 19655), (7862, 16360), (8180, 15724)]