21220558

素因数分解:

$2^1\times {\mathrm{61}}^1\times {\mathrm{281}}^1\times {\mathrm{619}}^1$

素因数の和:963

約数の個数: 16

約数和(自身を含む): 32520240

約数和(自身を除く): 11299682

約数列:

[1, 2, 61, 122, 281, 562, 619, 1238, 17141, 34282, 37759, 75518, 173939, 347878, 10610279, 21220558]

約数ペア:

[(1, 21220558), (2, 10610279), (61, 347878), (122, 173939), (281, 75518), (562, 37759), (619, 34282), (1238, 17141)]