21497325

素因数分解:

$3^1\times 5^2\times {\mathrm{41}}^1\times {\mathrm{6991}}^1$

素因数の和:7045

約数の個数: 24

約数和(自身を含む): 36414336

約数和(自身を除く): 14917011

約数列:

[1, 3, 5, 15, 25, 41, 75, 123, 205, 615, 1025, 3075, 6991, 20973, 34955, 104865, 174775, 286631, 524325, 859893, 1433155, 4299465, 7165775, 21497325]

約数ペア:

[(1, 21497325), (3, 7165775), (5, 4299465), (15, 1433155), (25, 859893), (41, 524325), (75, 286631), (123, 174775), (205, 104865), (615, 34955), (1025, 20973), (3075, 6991)]