20967400

素因数分解:

$2^3\times 5^2\times {\mathrm{41}}^1\times {\mathrm{2557}}^1$

素因数の和:2614

約数の個数: 48

約数和(自身を含む): 49957740

約数和(自身を除く): 28990340

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 41, 50, 82, 100, 164, 200, 205, 328, 410, 820, 1025, 1640, 2050, 2557, 4100, 5114, 8200, 10228, 12785, 20456, 25570, 51140, 63925, 102280, 104837, 127850, 209674, 255700, 419348, 511400, 524185, 838696, 1048370, 2096740, 2620925, 4193480, 5241850, 10483700, 20967400]

約数ペア:

[(1, 20967400), (2, 10483700), (4, 5241850), (5, 4193480), (8, 2620925), (10, 2096740), (20, 1048370), (25, 838696), (40, 524185), (41, 511400), (50, 419348), (82, 255700), (100, 209674), (164, 127850), (200, 104837), (205, 102280), (328, 63925), (410, 51140), (820, 25570), (1025, 20456), (1640, 12785), (2050, 10228), (2557, 8200), (4100, 5114)]