20871340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{3467}}^1$

素因数の和:3526

約数の個数: 48

約数和(自身を含む): 51270912

約数和(自身を除く): 30399572

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 43, 70, 86, 140, 172, 215, 301, 430, 602, 860, 1204, 1505, 3010, 3467, 6020, 6934, 13868, 17335, 24269, 34670, 48538, 69340, 97076, 121345, 149081, 242690, 298162, 485380, 596324, 745405, 1043567, 1490810, 2087134, 2981620, 4174268, 5217835, 10435670, 20871340]

約数ペア:

[(1, 20871340), (2, 10435670), (4, 5217835), (5, 4174268), (7, 2981620), (10, 2087134), (14, 1490810), (20, 1043567), (28, 745405), (35, 596324), (43, 485380), (70, 298162), (86, 242690), (140, 149081), (172, 121345), (215, 97076), (301, 69340), (430, 48538), (602, 34670), (860, 24269), (1204, 17335), (1505, 13868), (3010, 6934), (3467, 6020)]