128518420

素因数分解:

$2^2\times 5^1\times {\mathrm{179}}^1\times {\mathrm{35899}}^1$

素因数の和:36087

約数の個数: 24

約数和(自身を含む): 271404000

約数和(自身を除く): 142885580

約数列:

[1, 2, 4, 5, 10, 20, 179, 358, 716, 895, 1790, 3580, 35899, 71798, 143596, 179495, 358990, 717980, 6425921, 12851842, 25703684, 32129605, 64259210, 128518420]

約数ペア:

[(1, 128518420), (2, 64259210), (4, 32129605), (5, 25703684), (10, 12851842), (20, 6425921), (179, 717980), (358, 358990), (716, 179495), (895, 143596), (1790, 71798), (3580, 35899)]