21345478

素因数分解:

$2^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{19801}}^1$

素因数の和:19828

約数の個数: 24

約数和(自身を含む): 40633704

約数和(自身を除く): 19288226

約数列:

[1, 2, 7, 11, 14, 22, 49, 77, 98, 154, 539, 1078, 19801, 39602, 138607, 217811, 277214, 435622, 970249, 1524677, 1940498, 3049354, 10672739, 21345478]

約数ペア:

[(1, 21345478), (2, 10672739), (7, 3049354), (11, 1940498), (14, 1524677), (22, 970249), (49, 435622), (77, 277214), (98, 217811), (154, 138607), (539, 39602), (1078, 19801)]