21387170

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{277}}^1\times {\mathrm{1103}}^1$

素因数の和:1394

約数の個数: 32

約数和(自身を含む): 44195328

約数和(自身を除く): 22808158

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 277, 554, 1103, 1385, 1939, 2206, 2770, 3878, 5515, 7721, 9695, 11030, 15442, 19390, 38605, 77210, 305531, 611062, 1527655, 2138717, 3055310, 4277434, 10693585, 21387170]

約数ペア:

[(1, 21387170), (2, 10693585), (5, 4277434), (7, 3055310), (10, 2138717), (14, 1527655), (35, 611062), (70, 305531), (277, 77210), (554, 38605), (1103, 19390), (1385, 15442), (1939, 11030), (2206, 9695), (2770, 7721), (3878, 5515)]