21445718

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{2179}}^1$

素因数の和:2244

約数の個数: 32

約数和(自身を含む): 39763200

約数和(自身を除く): 18317482

約数列:

[1, 2, 7, 14, 19, 37, 38, 74, 133, 259, 266, 518, 703, 1406, 2179, 4358, 4921, 9842, 15253, 30506, 41401, 80623, 82802, 161246, 289807, 564361, 579614, 1128722, 1531837, 3063674, 10722859, 21445718]

約数ペア:

[(1, 21445718), (2, 10722859), (7, 3063674), (14, 1531837), (19, 1128722), (37, 579614), (38, 564361), (74, 289807), (133, 161246), (259, 82802), (266, 80623), (518, 41401), (703, 30506), (1406, 15253), (2179, 9842), (4358, 4921)]