21000295690

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{9209}}^1\times {\mathrm{20731}}^1$

素因数の和:29958

約数の個数: 32

約数和(自身を含む): 41243411520

約数和(自身を除く): 20243115830

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 9209, 18418, 20731, 41462, 46045, 92090, 101299, 103655, 202598, 207310, 228041, 456082, 506495, 1012990, 1140205, 2280410, 190911779, 381823558, 954558895, 1909117790, 2100029569, 4200059138, 10500147845, 21000295690]

約数ペア:

[(1, 21000295690), (2, 10500147845), (5, 4200059138), (10, 2100029569), (11, 1909117790), (22, 954558895), (55, 381823558), (110, 190911779), (9209, 2280410), (18418, 1140205), (20731, 1012990), (41462, 506495), (46045, 456082), (92090, 228041), (101299, 207310), (103655, 202598)]