18880415

素因数分解:

$5^1\times {\mathrm{61}}^1\times {\mathrm{103}}^1\times {\mathrm{601}}^1$

素因数の和:770

約数の個数: 16

約数和(自身を含む): 23290176

約数和(自身を除く): 4409761

約数列:

[1, 5, 61, 103, 305, 515, 601, 3005, 6283, 31415, 36661, 61903, 183305, 309515, 3776083, 18880415]

約数ペア:

[(1, 18880415), (5, 3776083), (61, 309515), (103, 183305), (305, 61903), (515, 36661), (601, 31415), (3005, 6283)]