21228915

素因数分解:

$3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{23201}}^1$

素因数の和:23270

約数の個数: 16

約数和(自身を含む): 34524576

約数和(自身を除く): 13295661

約数列:

[1, 3, 5, 15, 61, 183, 305, 915, 23201, 69603, 116005, 348015, 1415261, 4245783, 7076305, 21228915]

約数ペア:

[(1, 21228915), (3, 7076305), (5, 4245783), (15, 1415261), (61, 348015), (183, 116005), (305, 69603), (915, 23201)]