28207180

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^2\times {\mathrm{839}}^1$

素因数の和:930

約数の個数: 36

約数和(自身を含む): 60787440

約数和(自身を除く): 32580260

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 839, 1678, 1681, 3356, 3362, 4195, 6724, 8390, 8405, 16780, 16810, 33620, 34399, 68798, 137596, 171995, 343990, 687980, 1410359, 2820718, 5641436, 7051795, 14103590, 28207180]

約数ペア:

[(1, 28207180), (2, 14103590), (4, 7051795), (5, 5641436), (10, 2820718), (20, 1410359), (41, 687980), (82, 343990), (164, 171995), (205, 137596), (410, 68798), (820, 34399), (839, 33620), (1678, 16810), (1681, 16780), (3356, 8405), (3362, 8390), (4195, 6724)]