18785320

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{8861}}^1$

素因数の和:8925

約数の個数: 32

約数和(自身を含む): 43069320

約数和(自身を除く): 24284000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 8861, 17722, 35444, 44305, 70888, 88610, 177220, 354440, 469633, 939266, 1878532, 2348165, 3757064, 4696330, 9392660, 18785320]

約数ペア:

[(1, 18785320), (2, 9392660), (4, 4696330), (5, 3757064), (8, 2348165), (10, 1878532), (20, 939266), (40, 469633), (53, 354440), (106, 177220), (212, 88610), (265, 70888), (424, 44305), (530, 35444), (1060, 17722), (2120, 8861)]