28335220

素因数分解:

$2^2\times 5^1\times {\mathrm{829}}^1\times {\mathrm{1709}}^1$

素因数の和:2547

約数の個数: 24

約数和(自身を含む): 59610600

約数和(自身を除く): 31275380

約数列:

[1, 2, 4, 5, 10, 20, 829, 1658, 1709, 3316, 3418, 4145, 6836, 8290, 8545, 16580, 17090, 34180, 1416761, 2833522, 5667044, 7083805, 14167610, 28335220]

約数ペア:

[(1, 28335220), (2, 14167610), (4, 7083805), (5, 5667044), (10, 2833522), (20, 1416761), (829, 34180), (1658, 17090), (1709, 16580), (3316, 8545), (3418, 8290), (4145, 6836)]