28125220

素因数分解:

$2^2\times 5^1\times {\mathrm{263}}^1\times {\mathrm{5347}}^1$

素因数の和:5619

約数の個数: 24

約数和(自身を含む): 59298624

約数和(自身を除く): 31173404

約数列:

[1, 2, 4, 5, 10, 20, 263, 526, 1052, 1315, 2630, 5260, 5347, 10694, 21388, 26735, 53470, 106940, 1406261, 2812522, 5625044, 7031305, 14062610, 28125220]

約数ペア:

[(1, 28125220), (2, 14062610), (4, 7031305), (5, 5625044), (10, 2812522), (20, 1406261), (263, 106940), (526, 53470), (1052, 26735), (1315, 21388), (2630, 10694), (5260, 5347)]