21051814

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{197}}^1\times {\mathrm{449}}^1$

素因数の和:672

約数の個数: 32

約数和(自身を含む): 38491200

約数和(自身を除く): 17439386

約数列:

[1, 2, 7, 14, 17, 34, 119, 197, 238, 394, 449, 898, 1379, 2758, 3143, 3349, 6286, 6698, 7633, 15266, 23443, 46886, 53431, 88453, 106862, 176906, 619171, 1238342, 1503701, 3007402, 10525907, 21051814]

約数ペア:

[(1, 21051814), (2, 10525907), (7, 3007402), (14, 1503701), (17, 1238342), (34, 619171), (119, 176906), (197, 106862), (238, 88453), (394, 53431), (449, 46886), (898, 23443), (1379, 15266), (2758, 7633), (3143, 6698), (3349, 6286)]