18637768

素因数分解:

$2^3\times {\mathrm{53}}^1\times {\mathrm{113}}^1\times {\mathrm{389}}^1$

素因数の和:561

約数の個数: 32

約数和(自身を含む): 36012600

約数和(自身を除く): 17374832

約数列:

[1, 2, 4, 8, 53, 106, 113, 212, 226, 389, 424, 452, 778, 904, 1556, 3112, 5989, 11978, 20617, 23956, 41234, 43957, 47912, 82468, 87914, 164936, 175828, 351656, 2329721, 4659442, 9318884, 18637768]

約数ペア:

[(1, 18637768), (2, 9318884), (4, 4659442), (8, 2329721), (53, 351656), (106, 175828), (113, 164936), (212, 87914), (226, 82468), (389, 47912), (424, 43957), (452, 41234), (778, 23956), (904, 20617), (1556, 11978), (3112, 5989)]