28187120

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{27103}}^1$

素因数の和:27129

約数の個数: 40

約数和(自身を含む): 70578816

約数和(自身を除く): 42391696

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 27103, 54206, 108412, 135515, 216824, 271030, 352339, 433648, 542060, 704678, 1084120, 1409356, 1761695, 2168240, 2818712, 3523390, 5637424, 7046780, 14093560, 28187120]

約数ペア:

[(1, 28187120), (2, 14093560), (4, 7046780), (5, 5637424), (8, 3523390), (10, 2818712), (13, 2168240), (16, 1761695), (20, 1409356), (26, 1084120), (40, 704678), (52, 542060), (65, 433648), (80, 352339), (104, 271030), (130, 216824), (208, 135515), (260, 108412), (520, 54206), (1040, 27103)]