21751580

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{57241}}^1$

素因数の和:57269

約数の個数: 24

約数和(自身を含む): 48083280

約数和(自身を除く): 26331700

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 57241, 114482, 228964, 286205, 572410, 1087579, 1144820, 2175158, 4350316, 5437895, 10875790, 21751580]

約数ペア:

[(1, 21751580), (2, 10875790), (4, 5437895), (5, 4350316), (10, 2175158), (19, 1144820), (20, 1087579), (38, 572410), (76, 286205), (95, 228964), (190, 114482), (380, 57241)]