20405908

素因数分解:

$2^2\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{4091}}^1$

素因数の和:4167

約数の個数: 24

約数和(自身を含む): 37810080

約数和(自身を除く): 17404172

約数列:

[1, 2, 4, 29, 43, 58, 86, 116, 172, 1247, 2494, 4091, 4988, 8182, 16364, 118639, 175913, 237278, 351826, 474556, 703652, 5101477, 10202954, 20405908]

約数ペア:

[(1, 20405908), (2, 10202954), (4, 5101477), (29, 703652), (43, 474556), (58, 351826), (86, 237278), (116, 175913), (172, 118639), (1247, 16364), (2494, 8182), (4091, 4988)]