129427840

素因数分解:

$2^7\times 5^1\times {\mathrm{202231}}^1$

素因数の和:202250

約数の個数: 32

約数和(自身を含む): 309414960

約数和(自身を除く): 179987120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 202231, 404462, 808924, 1011155, 1617848, 2022310, 3235696, 4044620, 6471392, 8089240, 12942784, 16178480, 25885568, 32356960, 64713920, 129427840]

約数ペア:

[(1, 129427840), (2, 64713920), (4, 32356960), (5, 25885568), (8, 16178480), (10, 12942784), (16, 8089240), (20, 6471392), (32, 4044620), (40, 3235696), (64, 2022310), (80, 1617848), (128, 1011155), (160, 808924), (320, 404462), (640, 202231)]