21917976125

素因数分解:

$5^3\times {\mathrm{43}}^1\times {\mathrm{4077763}}^1$

素因数の和:4077821

約数の個数: 16

約数和(自身を含む): 27989772096

約数和(自身を除く): 6071795971

約数列:

[1, 5, 25, 43, 125, 215, 1075, 5375, 4077763, 20388815, 101944075, 175343809, 509720375, 876719045, 4383595225, 21917976125]

約数ペア:

[(1, 21917976125), (5, 4383595225), (25, 876719045), (43, 509720375), (125, 175343809), (215, 101944075), (1075, 20388815), (5375, 4077763)]