21000751945

素因数分解:

$5^1\times {\mathrm{89}}^1\times {\mathrm{239}}^1\times {\mathrm{379}}^1\times {\mathrm{521}}^1$

素因数の和:1233

約数の個数: 32

約数和(自身を含む): 25707456000

約数和(自身を除く): 4706704055

約数列:

[1, 5, 89, 239, 379, 445, 521, 1195, 1895, 2605, 21271, 33731, 46369, 90581, 106355, 124519, 168655, 197459, 231845, 452905, 622595, 987295, 8061709, 11082191, 17573851, 40308545, 47192701, 55410955, 87869255, 235963505, 4200150389, 21000751945]

約数ペア:

[(1, 21000751945), (5, 4200150389), (89, 235963505), (239, 87869255), (379, 55410955), (445, 47192701), (521, 40308545), (1195, 17573851), (1895, 11082191), (2605, 8061709), (21271, 987295), (33731, 622595), (46369, 452905), (90581, 231845), (106355, 197459), (124519, 168655)]