21958447

素因数分解:

$7^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{2153}}^1$

素因数の和:2238

約数の個数: 16

約数和(自身を含む): 26468352

約数和(自身を除く): 4509905

約数列:

[1, 7, 31, 47, 217, 329, 1457, 2153, 10199, 15071, 66743, 101191, 467201, 708337, 3136921, 21958447]

約数ペア:

[(1, 21958447), (7, 3136921), (31, 708337), (47, 467201), (217, 101191), (329, 66743), (1457, 15071), (2153, 10199)]