21719299

素因数分解:

$7^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{569}}^1$

素因数の和:643

約数の個数: 24

約数和(自身を含む): 27291600

約数和(自身を除く): 5572301

約数列:

[1, 7, 19, 41, 49, 133, 287, 569, 779, 931, 2009, 3983, 5453, 10811, 23329, 27881, 38171, 75677, 163303, 443251, 529739, 1143121, 3102757, 21719299]

約数ペア:

[(1, 21719299), (7, 3102757), (19, 1143121), (41, 529739), (49, 443251), (133, 163303), (287, 75677), (569, 38171), (779, 27881), (931, 23329), (2009, 10811), (3983, 5453)]