18906380

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{3271}}^1$

素因数の和:3314

約数の個数: 36

約数和(自身を含む): 42189168

約数和(自身を除く): 23282788

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 289, 340, 578, 1156, 1445, 2890, 3271, 5780, 6542, 13084, 16355, 32710, 55607, 65420, 111214, 222428, 278035, 556070, 945319, 1112140, 1890638, 3781276, 4726595, 9453190, 18906380]

約数ペア:

[(1, 18906380), (2, 9453190), (4, 4726595), (5, 3781276), (10, 1890638), (17, 1112140), (20, 945319), (34, 556070), (68, 278035), (85, 222428), (170, 111214), (289, 65420), (340, 55607), (578, 32710), (1156, 16355), (1445, 13084), (2890, 6542), (3271, 5780)]