21016574

素因数分解:

$2^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{5557}}^1$

素因数の和:5651

約数の個数: 16

約数和(自身を含む): 33081216

約数和(自身を除く): 12064642

約数列:

[1, 2, 31, 61, 62, 122, 1891, 3782, 5557, 11114, 172267, 338977, 344534, 677954, 10508287, 21016574]

約数ペア:

[(1, 21016574), (2, 10508287), (31, 677954), (61, 344534), (62, 338977), (122, 172267), (1891, 11114), (3782, 5557)]