18421264

素因数分解:

$2^4\times {\mathrm{29}}^2\times {\mathrm{37}}^2$

素因数の和:140

約数の個数: 45

約数和(自身を含む): 37990407

約数和(自身を除く): 19569143

約数列:

[1, 2, 4, 8, 16, 29, 37, 58, 74, 116, 148, 232, 296, 464, 592, 841, 1073, 1369, 1682, 2146, 2738, 3364, 4292, 5476, 6728, 8584, 10952, 13456, 17168, 21904, 31117, 39701, 62234, 79402, 124468, 158804, 248936, 317608, 497872, 635216, 1151329, 2302658, 4605316, 9210632, 18421264]

約数ペア:

[(1, 18421264), (2, 9210632), (4, 4605316), (8, 2302658), (16, 1151329), (29, 635216), (37, 497872), (58, 317608), (74, 248936), (116, 158804), (148, 124468), (232, 79402), (296, 62234), (464, 39701), (592, 31117), (841, 21904), (1073, 17168), (1369, 13456), (1682, 10952), (2146, 8584), (2738, 6728), (3364, 5476)]