21901825

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{1091}}^1$

素因数の和:1185

約数の個数: 24

約数和(自身を含む): 30060576

約数和(自身を除く): 8158751

約数列:

[1, 5, 11, 25, 55, 73, 275, 365, 803, 1091, 1825, 4015, 5455, 12001, 20075, 27275, 60005, 79643, 300025, 398215, 876073, 1991075, 4380365, 21901825]

約数ペア:

[(1, 21901825), (5, 4380365), (11, 1991075), (25, 876073), (55, 398215), (73, 300025), (275, 79643), (365, 60005), (803, 27275), (1091, 20075), (1825, 12001), (4015, 5455)]