21381207

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{4637}}^1$

素因数の和:4722

約数の個数: 16

約数和(自身を含む): 30054240

約数和(自身を除く): 8673033

約数列:

[1, 3, 29, 53, 87, 159, 1537, 4611, 4637, 13911, 134473, 245761, 403419, 737283, 7127069, 21381207]

約数ペア:

[(1, 21381207), (3, 7127069), (29, 737283), (53, 403419), (87, 245761), (159, 134473), (1537, 13911), (4611, 4637)]