21220388

素因数分解:

$2^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{20483}}^1$

素因数の和:20531

約数の個数: 24

約数和(自身を含む): 43589952

約数和(自身を除く): 22369564

約数列:

[1, 2, 4, 7, 14, 28, 37, 74, 148, 259, 518, 1036, 20483, 40966, 81932, 143381, 286762, 573524, 757871, 1515742, 3031484, 5305097, 10610194, 21220388]

約数ペア:

[(1, 21220388), (2, 10610194), (4, 5305097), (7, 3031484), (14, 1515742), (28, 757871), (37, 573524), (74, 286762), (148, 143381), (259, 81932), (518, 40966), (1036, 20483)]