21681926

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{2203}}^1$

素因数の和:2268

約数の個数: 32

約数和(自身を含む): 40200960

約数和(自身を除く): 18519034

約数列:

[1, 2, 7, 14, 19, 37, 38, 74, 133, 259, 266, 518, 703, 1406, 2203, 4406, 4921, 9842, 15421, 30842, 41857, 81511, 83714, 163022, 292999, 570577, 585998, 1141154, 1548709, 3097418, 10840963, 21681926]

約数ペア:

[(1, 21681926), (2, 10840963), (7, 3097418), (14, 1548709), (19, 1141154), (37, 585998), (38, 570577), (74, 292999), (133, 163022), (259, 83714), (266, 81511), (518, 41857), (703, 30842), (1406, 15421), (2203, 9842), (4406, 4921)]