20211789

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{421}}^1\times {\mathrm{1231}}^1$

素因数の和:1668

約数の個数: 16

約数和(自身を含む): 29114624

約数和(自身を除く): 8902835

約数列:

[1, 3, 13, 39, 421, 1231, 1263, 3693, 5473, 16003, 16419, 48009, 518251, 1554753, 6737263, 20211789]

約数ペア:

[(1, 20211789), (3, 6737263), (13, 1554753), (39, 518251), (421, 48009), (1231, 16419), (1263, 16003), (3693, 5473)]