18880305

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{43403}}^1$

素因数の和:43440

約数の個数: 16

約数和(自身を含む): 31250880

約数和(自身を除く): 12370575

約数列:

[1, 3, 5, 15, 29, 87, 145, 435, 43403, 130209, 217015, 651045, 1258687, 3776061, 6293435, 18880305]

約数ペア:

[(1, 18880305), (3, 6293435), (5, 3776061), (15, 1258687), (29, 651045), (87, 217015), (145, 130209), (435, 43403)]