21321075

素因数分解:

$3^1\times 5^2\times {\mathrm{67}}^1\times {\mathrm{4243}}^1$

素因数の和:4323

約数の個数: 24

約数和(自身を含む): 35785408

約数和(自身を除く): 14464333

約数列:

[1, 3, 5, 15, 25, 67, 75, 201, 335, 1005, 1675, 4243, 5025, 12729, 21215, 63645, 106075, 284281, 318225, 852843, 1421405, 4264215, 7107025, 21321075]

約数ペア:

[(1, 21321075), (3, 7107025), (5, 4264215), (15, 1421405), (25, 852843), (67, 318225), (75, 284281), (201, 106075), (335, 63645), (1005, 21215), (1675, 12729), (4243, 5025)]