18964180

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^3\times {\mathrm{193}}^1$

素因数の和:253

約数の個数: 48

約数和(自身を含む): 42532560

約数和(自身を除く): 23568380

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 193, 289, 340, 386, 578, 772, 965, 1156, 1445, 1930, 2890, 3281, 3860, 4913, 5780, 6562, 9826, 13124, 16405, 19652, 24565, 32810, 49130, 55777, 65620, 98260, 111554, 223108, 278885, 557770, 948209, 1115540, 1896418, 3792836, 4741045, 9482090, 18964180]

約数ペア:

[(1, 18964180), (2, 9482090), (4, 4741045), (5, 3792836), (10, 1896418), (17, 1115540), (20, 948209), (34, 557770), (68, 278885), (85, 223108), (170, 111554), (193, 98260), (289, 65620), (340, 55777), (386, 49130), (578, 32810), (772, 24565), (965, 19652), (1156, 16405), (1445, 13124), (1930, 9826), (2890, 6562), (3281, 5780), (3860, 4913)]