18942160

素因数分解:

$2^4\times 5^1\times {\mathrm{97}}^1\times {\mathrm{2441}}^1$

素因数の和:2551

約数の個数: 40

約数和(自身を含む): 44512776

約数和(自身を除く): 25570616

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 97, 194, 388, 485, 776, 970, 1552, 1940, 2441, 3880, 4882, 7760, 9764, 12205, 19528, 24410, 39056, 48820, 97640, 195280, 236777, 473554, 947108, 1183885, 1894216, 2367770, 3788432, 4735540, 9471080, 18942160]

約数ペア:

[(1, 18942160), (2, 9471080), (4, 4735540), (5, 3788432), (8, 2367770), (10, 1894216), (16, 1183885), (20, 947108), (40, 473554), (80, 236777), (97, 195280), (194, 97640), (388, 48820), (485, 39056), (776, 24410), (970, 19528), (1552, 12205), (1940, 9764), (2441, 7760), (3880, 4882)]