21909950

素因数分解:

$2^1\times 5^2\times {\mathrm{311}}^1\times {\mathrm{1409}}^1$

素因数の和:1732

約数の個数: 24

約数和(自身を含む): 40912560

約数和(自身を除く): 19002610

約数列:

[1, 2, 5, 10, 25, 50, 311, 622, 1409, 1555, 2818, 3110, 7045, 7775, 14090, 15550, 35225, 70450, 438199, 876398, 2190995, 4381990, 10954975, 21909950]

約数ペア:

[(1, 21909950), (2, 10954975), (5, 4381990), (10, 2190995), (25, 876398), (50, 438199), (311, 70450), (622, 35225), (1409, 15550), (1555, 14090), (2818, 7775), (3110, 7045)]