28139505

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{677}}^1$

素因数の和:865

約数の個数: 32

約数和(自身を含む): 48034944

約数和(自身を除く): 19895439

約数列:

[1, 3, 5, 15, 17, 51, 85, 163, 255, 489, 677, 815, 2031, 2445, 2771, 3385, 8313, 10155, 11509, 13855, 34527, 41565, 57545, 110351, 172635, 331053, 551755, 1655265, 1875967, 5627901, 9379835, 28139505]

約数ペア:

[(1, 28139505), (3, 9379835), (5, 5627901), (15, 1875967), (17, 1655265), (51, 551755), (85, 331053), (163, 172635), (255, 110351), (489, 57545), (677, 41565), (815, 34527), (2031, 13855), (2445, 11509), (2771, 10155), (3385, 8313)]