21980643

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{13903}}^1$

素因数の和:13954

約数の個数: 16

約数和(自身を含む): 32034816

約数和(自身を除く): 10054173

約数列:

[1, 3, 17, 31, 51, 93, 527, 1581, 13903, 41709, 236351, 430993, 709053, 1292979, 7326881, 21980643]

約数ペア:

[(1, 21980643), (3, 7326881), (17, 1292979), (31, 709053), (51, 430993), (93, 236351), (527, 41709), (1581, 13903)]