21487052

素因数分解:

$2^2\times {\mathrm{79}}^1\times {\mathrm{97}}^1\times {\mathrm{701}}^1$

素因数の和:881

約数の個数: 24

約数和(自身を含む): 38525760

約数和(自身を除く): 17038708

約数列:

[1, 2, 4, 79, 97, 158, 194, 316, 388, 701, 1402, 2804, 7663, 15326, 30652, 55379, 67997, 110758, 135994, 221516, 271988, 5371763, 10743526, 21487052]

約数ペア:

[(1, 21487052), (2, 10743526), (4, 5371763), (79, 271988), (97, 221516), (158, 135994), (194, 110758), (316, 67997), (388, 55379), (701, 30652), (1402, 15326), (2804, 7663)]