21409401

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{4007}}^1$

素因数の和:4160

約数の個数: 16

約数和(自身を含む): 30973824

約数和(自身を除く): 9564423

約数列:

[1, 3, 13, 39, 137, 411, 1781, 4007, 5343, 12021, 52091, 156273, 548959, 1646877, 7136467, 21409401]

約数ペア:

[(1, 21409401), (3, 7136467), (13, 1646877), (39, 548959), (137, 156273), (411, 52091), (1781, 12021), (4007, 5343)]