18700215

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{42989}}^1$

素因数の和:43026

約数の個数: 16

約数和(自身を含む): 30952800

約数和(自身を除く): 12252585

約数列:

[1, 3, 5, 15, 29, 87, 145, 435, 42989, 128967, 214945, 644835, 1246681, 3740043, 6233405, 18700215]

約数ペア:

[(1, 18700215), (3, 6233405), (5, 3740043), (15, 1246681), (29, 644835), (87, 214945), (145, 128967), (435, 42989)]