129670720

素因数分解:

$2^6\times 5^1\times {\mathrm{405221}}^1$

素因数の和:405238

約数の個数: 28

約数和(自身を含む): 308779164

約数和(自身を除く): 179108444

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 405221, 810442, 1620884, 2026105, 3241768, 4052210, 6483536, 8104420, 12967072, 16208840, 25934144, 32417680, 64835360, 129670720]

約数ペア:

[(1, 129670720), (2, 64835360), (4, 32417680), (5, 25934144), (8, 16208840), (10, 12967072), (16, 8104420), (20, 6483536), (32, 4052210), (40, 3241768), (64, 2026105), (80, 1620884), (160, 810442), (320, 405221)]