28272985

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{103}}^2$

素因数の和:265

約数の個数: 24

約数和(自身を含む): 37795464

約数和(自身を除く): 9522479

約数列:

[1, 5, 13, 41, 65, 103, 205, 515, 533, 1339, 2665, 4223, 6695, 10609, 21115, 53045, 54899, 137917, 274495, 434969, 689585, 2174845, 5654597, 28272985]

約数ペア:

[(1, 28272985), (5, 5654597), (13, 2174845), (41, 689585), (65, 434969), (103, 274495), (205, 137917), (515, 54899), (533, 53045), (1339, 21115), (2665, 10609), (4223, 6695)]