21282758

素因数分解:

$2^1\times 7^2\times {\mathrm{79}}^1\times {\mathrm{2749}}^1$

素因数の和:2844

約数の個数: 24

約数和(自身を含む): 37620000

約数和(自身を除く): 16337242

約数列:

[1, 2, 7, 14, 49, 79, 98, 158, 553, 1106, 2749, 3871, 5498, 7742, 19243, 38486, 134701, 217171, 269402, 434342, 1520197, 3040394, 10641379, 21282758]

約数ペア:

[(1, 21282758), (2, 10641379), (7, 3040394), (14, 1520197), (49, 434342), (79, 269402), (98, 217171), (158, 134701), (553, 38486), (1106, 19243), (2749, 7742), (3871, 5498)]