21252810

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{137}}^1\times {\mathrm{5171}}^1$

素因数の和:5318

約数の個数: 32

約数和(自身を含む): 51388992

約数和(自身を除く): 30136182

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 137, 274, 411, 685, 822, 1370, 2055, 4110, 5171, 10342, 15513, 25855, 31026, 51710, 77565, 155130, 708427, 1416854, 2125281, 3542135, 4250562, 7084270, 10626405, 21252810]

約数ペア:

[(1, 21252810), (2, 10626405), (3, 7084270), (5, 4250562), (6, 3542135), (10, 2125281), (15, 1416854), (30, 708427), (137, 155130), (274, 77565), (411, 51710), (685, 31026), (822, 25855), (1370, 15513), (2055, 10342), (4110, 5171)]