31897480

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{8221}}^1$

素因数の和:8329

約数の個数: 32

約数和(自身を含む): 72518040

約数和(自身を除く): 40620560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 8221, 16442, 32884, 41105, 65768, 82210, 164420, 328840, 797437, 1594874, 3189748, 3987185, 6379496, 7974370, 15948740, 31897480]

約数ペア:

[(1, 31897480), (2, 15948740), (4, 7974370), (5, 6379496), (8, 3987185), (10, 3189748), (20, 1594874), (40, 797437), (97, 328840), (194, 164420), (388, 82210), (485, 65768), (776, 41105), (970, 32884), (1940, 16442), (3880, 8221)]