18639520

素因数分解:

$2^5\times 5^1\times {\mathrm{97}}^1\times {\mathrm{1201}}^1$

素因数の和:1313

約数の個数: 48

約数和(自身を含む): 44526888

約数和(自身を除く): 25887368

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 97, 160, 194, 388, 485, 776, 970, 1201, 1552, 1940, 2402, 3104, 3880, 4804, 6005, 7760, 9608, 12010, 15520, 19216, 24020, 38432, 48040, 96080, 116497, 192160, 232994, 465988, 582485, 931976, 1164970, 1863952, 2329940, 3727904, 4659880, 9319760, 18639520]

約数ペア:

[(1, 18639520), (2, 9319760), (4, 4659880), (5, 3727904), (8, 2329940), (10, 1863952), (16, 1164970), (20, 931976), (32, 582485), (40, 465988), (80, 232994), (97, 192160), (160, 116497), (194, 96080), (388, 48040), (485, 38432), (776, 24020), (970, 19216), (1201, 15520), (1552, 12010), (1940, 9608), (2402, 7760), (3104, 6005), (3880, 4804)]