28201915

素因数分解:

$5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{7823}}^1$

素因数の和:7938

約数の個数: 16

約数和(自身を含む): 39057408

約数和(自身を除く): 10855493

約数列:

[1, 5, 7, 35, 103, 515, 721, 3605, 7823, 39115, 54761, 273805, 805769, 4028845, 5640383, 28201915]

約数ペア:

[(1, 28201915), (5, 5640383), (7, 4028845), (35, 805769), (103, 273805), (515, 54761), (721, 39115), (3605, 7823)]