31720215

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{6547}}^1$

素因数の和:6591

約数の個数: 32

約数和(自身を含む): 56574720

約数和(自身を除く): 24854505

約数列:

[1, 3, 5, 15, 17, 19, 51, 57, 85, 95, 255, 285, 323, 969, 1615, 4845, 6547, 19641, 32735, 98205, 111299, 124393, 333897, 373179, 556495, 621965, 1669485, 1865895, 2114681, 6344043, 10573405, 31720215]

約数ペア:

[(1, 31720215), (3, 10573405), (5, 6344043), (15, 2114681), (17, 1865895), (19, 1669485), (51, 621965), (57, 556495), (85, 373179), (95, 333897), (255, 124393), (285, 111299), (323, 98205), (969, 32735), (1615, 19641), (4845, 6547)]