20004460

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{3323}}^1$

素因数の和:3382

約数の個数: 48

約数和(自身を含む): 49142016

約数和(自身を除く): 29137556

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, 3323, 6020, 6646, 13292, 16615, 23261, 33230, 46522, 66460, 93044, 116305, 142889, 232610, 285778, 465220, 571556, 714445, 1000223, 1428890, 2000446, 2857780, 4000892, 5001115, 10002230, 20004460]

約数ペア:

[(1, 20004460), (2, 10002230), (4, 5001115), (5, 4000892), (7, 2857780), (10, 2000446), (14, 1428890), (20, 1000223), (28, 714445), (35, 571556), (43, 465220), (70, 285778), (86, 232610), (140, 142889), (172, 116305), (215, 93044), (301, 66460), (430, 46522), (602, 33230), (860, 23261), (1204, 16615), (1505, 13292), (3010, 6646), (3323, 6020)]