21261475

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{2633}}^1$

素因数の和:2679

約数の個数: 24

約数和(自身を含む): 29395440

約数和(自身を除く): 8133965

約数列:

[1, 5, 17, 19, 25, 85, 95, 323, 425, 475, 1615, 2633, 8075, 13165, 44761, 50027, 65825, 223805, 250135, 850459, 1119025, 1250675, 4252295, 21261475]

約数ペア:

[(1, 21261475), (5, 4252295), (17, 1250675), (19, 1119025), (25, 850459), (85, 250135), (95, 223805), (323, 65825), (425, 50027), (475, 44761), (1615, 13165), (2633, 8075)]