7258840

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{2039}}^1$

素因数の和:2139

約数の個数: 32

約数和(自身を含む): 16524000

約数和(自身を除く): 9265160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 2039, 3560, 4078, 8156, 10195, 16312, 20390, 40780, 81560, 181471, 362942, 725884, 907355, 1451768, 1814710, 3629420, 7258840]

約数ペア:

[(1, 7258840), (2, 3629420), (4, 1814710), (5, 1451768), (8, 907355), (10, 725884), (20, 362942), (40, 181471), (89, 81560), (178, 40780), (356, 20390), (445, 16312), (712, 10195), (890, 8156), (1780, 4078), (2039, 3560)]