21208541

素因数分解:

${\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{631}}^1$

素因数の和:740

約数の個数: 16

約数和(自身を含む): 23510400

約数和(自身を除く): 2301859

約数列:

[1, 19, 29, 61, 551, 631, 1159, 1769, 11989, 18299, 33611, 38491, 347681, 731329, 1116239, 21208541]

約数ペア:

[(1, 21208541), (19, 1116239), (29, 731329), (61, 347681), (551, 38491), (631, 33611), (1159, 18299), (1769, 11989)]