21000786616

素因数分解:

$2^3\times {\mathrm{613}}^1\times {\mathrm{4282379}}^1$

素因数の和:4282998

約数の個数: 16

約数和(自身を含む): 39440719800

約数和(自身を除く): 18439933184

約数列:

[1, 2, 4, 8, 613, 1226, 2452, 4904, 4282379, 8564758, 17129516, 34259032, 2625098327, 5250196654, 10500393308, 21000786616]

約数ペア:

[(1, 21000786616), (2, 10500393308), (4, 5250196654), (8, 2625098327), (613, 34259032), (1226, 17129516), (2452, 8564758), (4904, 4282379)]