21040424

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{2179}}^1$

素因数の和:2273

約数の個数: 32

約数和(自身を含む): 42379200

約数和(自身を除く): 21338776

約数列:

[1, 2, 4, 8, 17, 34, 68, 71, 136, 142, 284, 568, 1207, 2179, 2414, 4358, 4828, 8716, 9656, 17432, 37043, 74086, 148172, 154709, 296344, 309418, 618836, 1237672, 2630053, 5260106, 10520212, 21040424]

約数ペア:

[(1, 21040424), (2, 10520212), (4, 5260106), (8, 2630053), (17, 1237672), (34, 618836), (68, 309418), (71, 296344), (136, 154709), (142, 148172), (284, 74086), (568, 37043), (1207, 17432), (2179, 9656), (2414, 8716), (4358, 4828)]