21555032

素因数分解:

$2^3\times {\mathrm{71}}^1\times {\mathrm{137}}^1\times {\mathrm{277}}^1$

素因数の和:491

約数の個数: 32

約数和(自身を含む): 41433120

約数和(自身を除く): 19878088

約数列:

[1, 2, 4, 8, 71, 137, 142, 274, 277, 284, 548, 554, 568, 1096, 1108, 2216, 9727, 19454, 19667, 37949, 38908, 39334, 75898, 77816, 78668, 151796, 157336, 303592, 2694379, 5388758, 10777516, 21555032]

約数ペア:

[(1, 21555032), (2, 10777516), (4, 5388758), (8, 2694379), (71, 303592), (137, 157336), (142, 151796), (274, 78668), (277, 77816), (284, 75898), (548, 39334), (554, 38908), (568, 37949), (1096, 19667), (1108, 19454), (2216, 9727)]