20921925

素因数分解:

$3^1\times 5^2\times {\mathrm{71}}^1\times {\mathrm{3929}}^1$

素因数の和:4013

約数の個数: 24

約数和(自身を含む): 35087040

約数和(自身を除く): 14165115

約数列:

[1, 3, 5, 15, 25, 71, 75, 213, 355, 1065, 1775, 3929, 5325, 11787, 19645, 58935, 98225, 278959, 294675, 836877, 1394795, 4184385, 6973975, 20921925]

約数ペア:

[(1, 20921925), (3, 6973975), (5, 4184385), (15, 1394795), (25, 836877), (71, 294675), (75, 278959), (213, 98225), (355, 58935), (1065, 19645), (1775, 11787), (3929, 5325)]