649701

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{617}}^1$

素因数の和:642

約数の個数: 20

約数和(自身を含む): 1046892

約数和(自身を除く): 397191

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 617, 1053, 1851, 5553, 8021, 16659, 24063, 49977, 72189, 216567, 649701]

約数ペア:

[(1, 649701), (3, 216567), (9, 72189), (13, 49977), (27, 24063), (39, 16659), (81, 8021), (117, 5553), (351, 1851), (617, 1053)]