18899480

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{4871}}^1$

素因数の和:4979

約数の個数: 32

約数和(自身を含む): 42971040

約数和(自身を除く): 24071560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 4871, 9742, 19484, 24355, 38968, 48710, 97420, 194840, 472487, 944974, 1889948, 2362435, 3779896, 4724870, 9449740, 18899480]

約数ペア:

[(1, 18899480), (2, 9449740), (4, 4724870), (5, 3779896), (8, 2362435), (10, 1889948), (20, 944974), (40, 472487), (97, 194840), (194, 97420), (388, 48710), (485, 38968), (776, 24355), (970, 19484), (1940, 9742), (3880, 4871)]