28297880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{54419}}^1$

素因数の和:54443

約数の個数: 32

約数和(自身を含む): 68569200

約数和(自身を除く): 40271320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 54419, 108838, 217676, 272095, 435352, 544190, 707447, 1088380, 1414894, 2176760, 2829788, 3537235, 5659576, 7074470, 14148940, 28297880]

約数ペア:

[(1, 28297880), (2, 14148940), (4, 7074470), (5, 5659576), (8, 3537235), (10, 2829788), (13, 2176760), (20, 1414894), (26, 1088380), (40, 707447), (52, 544190), (65, 435352), (104, 272095), (130, 217676), (260, 108838), (520, 54419)]