5122840

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1439}}^1$

素因数の和:1539

約数の個数: 32

約数和(自身を含む): 11664000

約数和(自身を除く): 6541160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1439, 1780, 2878, 3560, 5756, 7195, 11512, 14390, 28780, 57560, 128071, 256142, 512284, 640355, 1024568, 1280710, 2561420, 5122840]

約数ペア:

[(1, 5122840), (2, 2561420), (4, 1280710), (5, 1024568), (8, 640355), (10, 512284), (20, 256142), (40, 128071), (89, 57560), (178, 28780), (356, 14390), (445, 11512), (712, 7195), (890, 5756), (1439, 3560), (1780, 2878)]