21477079

素因数分解:

${\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{137}}^1\times {\mathrm{389}}^1$

素因数の和:570

約数の個数: 16

約数和(自身を含む): 24111360

約数和(自身を除く): 2634281

約数列:

[1, 13, 31, 137, 389, 403, 1781, 4247, 5057, 12059, 53293, 55211, 156767, 692809, 1652083, 21477079]

約数ペア:

[(1, 21477079), (13, 1652083), (31, 692809), (137, 156767), (389, 55211), (403, 53293), (1781, 12059), (4247, 5057)]