21374875

素因数分解:

$5^3\times {\mathrm{307}}^1\times {\mathrm{557}}^1$

素因数の和:879

約数の個数: 16

約数和(自身を含む): 26810784

約数和(自身を除く): 5435909

約数列:

[1, 5, 25, 125, 307, 557, 1535, 2785, 7675, 13925, 38375, 69625, 170999, 854995, 4274975, 21374875]

約数ペア:

[(1, 21374875), (5, 4274975), (25, 854995), (125, 170999), (307, 69625), (557, 38375), (1535, 13925), (2785, 7675)]