21714140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{3607}}^1$

素因数の和:3666

約数の個数: 48

約数和(自身を含む): 53340672

約数和(自身を除く): 31626532

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, 3607, 6020, 7214, 14428, 18035, 25249, 36070, 50498, 72140, 100996, 126245, 155101, 252490, 310202, 504980, 620404, 775505, 1085707, 1551010, 2171414, 3102020, 4342828, 5428535, 10857070, 21714140]

約数ペア:

[(1, 21714140), (2, 10857070), (4, 5428535), (5, 4342828), (7, 3102020), (10, 2171414), (14, 1551010), (20, 1085707), (28, 775505), (35, 620404), (43, 504980), (70, 310202), (86, 252490), (140, 155101), (172, 126245), (215, 100996), (301, 72140), (430, 50498), (602, 36070), (860, 25249), (1204, 18035), (1505, 14428), (3010, 7214), (3607, 6020)]