21206263

素因数分解:

${\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{521}}^1$

素因数の和:666

約数の個数: 16

約数和(自身を含む): 23853312

約数和(自身を除く): 2647049

約数列:

[1, 13, 31, 101, 403, 521, 1313, 3131, 6773, 16151, 40703, 52621, 209963, 684073, 1631251, 21206263]

約数ペア:

[(1, 21206263), (13, 1631251), (31, 684073), (101, 209963), (403, 52621), (521, 40703), (1313, 16151), (3131, 6773)]