21000404875

素因数分解:

$5^3\times {\mathrm{47}}^1\times {\mathrm{991}}^1\times {\mathrm{3607}}^1$

素因数の和:4660

約数の個数: 32

約数和(自身を含む): 26800570368

約数和(自身を除く): 5800165493

約数列:

[1, 5, 25, 47, 125, 235, 991, 1175, 3607, 4955, 5875, 18035, 24775, 46577, 90175, 123875, 169529, 232885, 450875, 847645, 1164425, 3574537, 4238225, 5822125, 17872685, 21191125, 89363425, 168003239, 446817125, 840016195, 4200080975, 21000404875]

約数ペア:

[(1, 21000404875), (5, 4200080975), (25, 840016195), (47, 446817125), (125, 168003239), (235, 89363425), (991, 21191125), (1175, 17872685), (3607, 5822125), (4955, 4238225), (5875, 3574537), (18035, 1164425), (24775, 847645), (46577, 450875), (90175, 232885), (123875, 169529)]