20955575

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{157}}^1\times {\mathrm{281}}^1$

素因数の和:467

約数の個数: 24

約数和(自身を含む): 27624720

約数和(自身を除く): 6669145

約数列:

[1, 5, 19, 25, 95, 157, 281, 475, 785, 1405, 2983, 3925, 5339, 7025, 14915, 26695, 44117, 74575, 133475, 220585, 838223, 1102925, 4191115, 20955575]

約数ペア:

[(1, 20955575), (5, 4191115), (19, 1102925), (25, 838223), (95, 220585), (157, 133475), (281, 74575), (475, 44117), (785, 26695), (1405, 14915), (2983, 7025), (3925, 5339)]