20005075

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{83}}^1\times {\mathrm{311}}^1$

素因数の和:435

約数の個数: 24

約数和(自身を含む): 25998336

約数和(自身を除く): 5993261

約数列:

[1, 5, 25, 31, 83, 155, 311, 415, 775, 1555, 2075, 2573, 7775, 9641, 12865, 25813, 48205, 64325, 129065, 241025, 645325, 800203, 4001015, 20005075]

約数ペア:

[(1, 20005075), (5, 4001015), (25, 800203), (31, 645325), (83, 241025), (155, 129065), (311, 64325), (415, 48205), (775, 25813), (1555, 12865), (2075, 9641), (2573, 7775)]