21458290

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{7129}}^1$

素因数の和:7186

約数の個数: 32

約数和(自身を含む): 45175680

約数和(自身を除く): 23717390

約数列:

[1, 2, 5, 7, 10, 14, 35, 43, 70, 86, 215, 301, 430, 602, 1505, 3010, 7129, 14258, 35645, 49903, 71290, 99806, 249515, 306547, 499030, 613094, 1532735, 2145829, 3065470, 4291658, 10729145, 21458290]

約数ペア:

[(1, 21458290), (2, 10729145), (5, 4291658), (7, 3065470), (10, 2145829), (14, 1532735), (35, 613094), (43, 499030), (70, 306547), (86, 249515), (215, 99806), (301, 71290), (430, 49903), (602, 35645), (1505, 14258), (3010, 7129)]