20861878

素因数分解:

$2^1\times {\mathrm{61}}^1\times {\mathrm{307}}^1\times {\mathrm{557}}^1$

素因数の和:927

約数の個数: 16

約数和(自身を含む): 31966704

約数和(自身を除く): 11104826

約数列:

[1, 2, 61, 122, 307, 557, 614, 1114, 18727, 33977, 37454, 67954, 170999, 341998, 10430939, 20861878]

約数ペア:

[(1, 20861878), (2, 10430939), (61, 341998), (122, 170999), (307, 67954), (557, 37454), (614, 33977), (1114, 18727)]