21375879

素因数分解:

$3^1\times 7^1\times {\mathrm{197}}^1\times {\mathrm{5167}}^1$

素因数の和:5374

約数の個数: 16

約数和(自身を含む): 32744448

約数和(自身を除く): 11368569

約数列:

[1, 3, 7, 21, 197, 591, 1379, 4137, 5167, 15501, 36169, 108507, 1017899, 3053697, 7125293, 21375879]

約数ペア:

[(1, 21375879), (3, 7125293), (7, 3053697), (21, 1017899), (197, 108507), (591, 36169), (1379, 15501), (4137, 5167)]