21194075

素因数分解:

$5^2\times 7^1\times {\mathrm{163}}^1\times {\mathrm{743}}^1$

素因数の和:923

約数の個数: 24

約数和(自身を含む): 30259968

約数和(自身を除く): 9065893

約数列:

[1, 5, 7, 25, 35, 163, 175, 743, 815, 1141, 3715, 4075, 5201, 5705, 18575, 26005, 28525, 121109, 130025, 605545, 847763, 3027725, 4238815, 21194075]

約数ペア:

[(1, 21194075), (5, 4238815), (7, 3027725), (25, 847763), (35, 605545), (163, 130025), (175, 121109), (743, 28525), (815, 26005), (1141, 18575), (3715, 5705), (4075, 5201)]