211557657

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{157}}^1\times {\mathrm{331}}^1$

素因数の和:573

約数の個数: 32

約数和(自身を含む): 302146560

約数和(自身を除く): 90588903

約数列:

[1, 3, 23, 59, 69, 157, 177, 331, 471, 993, 1357, 3611, 4071, 7613, 9263, 10833, 19529, 22839, 27789, 51967, 58587, 155901, 213049, 449167, 639147, 1195241, 1347501, 3066053, 3585723, 9198159, 70519219, 211557657]

約数ペア:

[(1, 211557657), (3, 70519219), (23, 9198159), (59, 3585723), (69, 3066053), (157, 1347501), (177, 1195241), (331, 639147), (471, 449167), (993, 213049), (1357, 155901), (3611, 58587), (4071, 51967), (7613, 27789), (9263, 22839), (10833, 19529)]