18790780

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{3251}}^1$

素因数の和:3294

約数の個数: 36

約数和(自身を含む): 41931288

約数和(自身を除く): 23140508

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 289, 340, 578, 1156, 1445, 2890, 3251, 5780, 6502, 13004, 16255, 32510, 55267, 65020, 110534, 221068, 276335, 552670, 939539, 1105340, 1879078, 3758156, 4697695, 9395390, 18790780]

約数ペア:

[(1, 18790780), (2, 9395390), (4, 4697695), (5, 3758156), (10, 1879078), (17, 1105340), (20, 939539), (34, 552670), (68, 276335), (85, 221068), (170, 110534), (289, 65020), (340, 55267), (578, 32510), (1156, 16255), (1445, 13004), (2890, 6502), (3251, 5780)]