408028420

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{9851}}^1$

素因数の和:9988

約数の個数: 48

約数和(自身を含む): 910324800

約数和(自身を除く): 502296380

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 109, 190, 218, 380, 436, 545, 1090, 2071, 2180, 4142, 8284, 9851, 10355, 19702, 20710, 39404, 41420, 49255, 98510, 187169, 197020, 374338, 748676, 935845, 1073759, 1871690, 2147518, 3743380, 4295036, 5368795, 10737590, 20401421, 21475180, 40802842, 81605684, 102007105, 204014210, 408028420]

約数ペア:

[(1, 408028420), (2, 204014210), (4, 102007105), (5, 81605684), (10, 40802842), (19, 21475180), (20, 20401421), (38, 10737590), (76, 5368795), (95, 4295036), (109, 3743380), (190, 2147518), (218, 1871690), (380, 1073759), (436, 935845), (545, 748676), (1090, 374338), (2071, 197020), (2180, 187169), (4142, 98510), (8284, 49255), (9851, 41420), (10355, 39404), (19702, 20710)]