31997215

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{173}}^1\times {\mathrm{521}}^1$

素因数の和:770

約数の個数: 16

約数和(自身を含む): 39237696

約数和(自身を除く): 7240481

約数列:

[1, 5, 71, 173, 355, 521, 865, 2605, 12283, 36991, 61415, 90133, 184955, 450665, 6399443, 31997215]

約数ペア:

[(1, 31997215), (5, 6399443), (71, 450665), (173, 184955), (355, 90133), (521, 61415), (865, 36991), (2605, 12283)]