691808980

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{19891}}^1$

素因数の和:19984

約数の個数: 48

約数和(自身を含む): 1523886336

約数和(自身を除く): 832077356

約数列:

[1, 2, 4, 5, 10, 20, 37, 47, 74, 94, 148, 185, 188, 235, 370, 470, 740, 940, 1739, 3478, 6956, 8695, 17390, 19891, 34780, 39782, 79564, 99455, 198910, 397820, 735967, 934877, 1471934, 1869754, 2943868, 3679835, 3739508, 4674385, 7359670, 9348770, 14719340, 18697540, 34590449, 69180898, 138361796, 172952245, 345904490, 691808980]

約数ペア:

[(1, 691808980), (2, 345904490), (4, 172952245), (5, 138361796), (10, 69180898), (20, 34590449), (37, 18697540), (47, 14719340), (74, 9348770), (94, 7359670), (148, 4674385), (185, 3739508), (188, 3679835), (235, 2943868), (370, 1869754), (470, 1471934), (740, 934877), (940, 735967), (1739, 397820), (3478, 198910), (6956, 99455), (8695, 79564), (17390, 39782), (19891, 34780)]