21567154

素因数分解:

$2^1\times 7^3\times {\mathrm{149}}^1\times {\mathrm{211}}^1$

素因数の和:383

約数の個数: 32

約数和(自身を含む): 38160000

約数和(自身を除く): 16592846

約数列:

[1, 2, 7, 14, 49, 98, 149, 211, 298, 343, 422, 686, 1043, 1477, 2086, 2954, 7301, 10339, 14602, 20678, 31439, 51107, 62878, 72373, 102214, 144746, 220073, 440146, 1540511, 3081022, 10783577, 21567154]

約数ペア:

[(1, 21567154), (2, 10783577), (7, 3081022), (14, 1540511), (49, 440146), (98, 220073), (149, 144746), (211, 102214), (298, 72373), (343, 62878), (422, 51107), (686, 31439), (1043, 20678), (1477, 14602), (2086, 10339), (2954, 7301)]