21061525

素因数分解:

$5^2\times {\mathrm{59}}^1\times {\mathrm{109}}^1\times {\mathrm{131}}^1$

素因数の和:309

約数の個数: 24

約数和(自身を含む): 27007200

約数和(自身を除く): 5945675

約数列:

[1, 5, 25, 59, 109, 131, 295, 545, 655, 1475, 2725, 3275, 6431, 7729, 14279, 32155, 38645, 71395, 160775, 193225, 356975, 842461, 4212305, 21061525]

約数ペア:

[(1, 21061525), (5, 4212305), (25, 842461), (59, 356975), (109, 193225), (131, 160775), (295, 71395), (545, 38645), (655, 32155), (1475, 14279), (2725, 7729), (3275, 6431)]