21329275

素因数分解:

$5^2\times {\mathrm{11}}^3\times {\mathrm{641}}^1$

素因数の和:684

約数の個数: 24

約数和(自身を含む): 29136528

約数和(自身を除く): 7807253

約数列:

[1, 5, 11, 25, 55, 121, 275, 605, 641, 1331, 3025, 3205, 6655, 7051, 16025, 33275, 35255, 77561, 176275, 387805, 853171, 1939025, 4265855, 21329275]

約数ペア:

[(1, 21329275), (5, 4265855), (11, 1939025), (25, 853171), (55, 387805), (121, 176275), (275, 77561), (605, 35255), (641, 33275), (1331, 16025), (3025, 7051), (3205, 6655)]