18338369

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{641}}^1$

素因数の和:776

約数の個数: 16

約数和(自身を含む): 21653376

約数和(自身を除く): 3315007

約数列:

[1, 7, 61, 67, 427, 469, 641, 4087, 4487, 28609, 39101, 42947, 273707, 300629, 2619767, 18338369]

約数ペア:

[(1, 18338369), (7, 2619767), (61, 300629), (67, 273707), (427, 42947), (469, 39101), (641, 28609), (4087, 4487)]