127654720

素因数分解:

$2^6\times 5^1\times {\mathrm{398921}}^1$

素因数の和:398938

約数の個数: 28

約数和(自身を含む): 303978564

約数和(自身を除く): 176323844

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 398921, 797842, 1595684, 1994605, 3191368, 3989210, 6382736, 7978420, 12765472, 15956840, 25530944, 31913680, 63827360, 127654720]

約数ペア:

[(1, 127654720), (2, 63827360), (4, 31913680), (5, 25530944), (8, 15956840), (10, 12765472), (16, 7978420), (20, 6382736), (32, 3989210), (40, 3191368), (64, 1994605), (80, 1595684), (160, 797842), (320, 398921)]