639771841

素因数分解:

${\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{401}}^1\times {\mathrm{977}}^1$

素因数の和:1472

約数の個数: 16

約数和(自身を含む): 679373568

約数和(自身を除く): 39601727

約数列:

[1, 23, 71, 401, 977, 1633, 9223, 22471, 28471, 69367, 391777, 654833, 1595441, 9010871, 27816167, 639771841]

約数ペア:

[(1, 639771841), (23, 27816167), (71, 9010871), (401, 1595441), (977, 654833), (1633, 391777), (9223, 69367), (22471, 28471)]