20954975

素因数分解:

$5^2\times {\mathrm{43}}^1\times {\mathrm{101}}^1\times {\mathrm{193}}^1$

素因数の和:347

約数の個数: 24

約数和(自身を含む): 26990832

約数和(自身を除く): 6035857

約数列:

[1, 5, 25, 43, 101, 193, 215, 505, 965, 1075, 2525, 4343, 4825, 8299, 19493, 21715, 41495, 97465, 108575, 207475, 487325, 838199, 4190995, 20954975]

約数ペア:

[(1, 20954975), (5, 4190995), (25, 838199), (43, 487325), (101, 207475), (193, 108575), (215, 97465), (505, 41495), (965, 21715), (1075, 19493), (2525, 8299), (4343, 4825)]