20466789

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{211}}^1$

素因数の和:401

約数の個数: 32

約数和(自身を含む): 32563200

約数和(自身を除く): 12096411

約数列:

[1, 3, 7, 21, 31, 93, 149, 211, 217, 447, 633, 651, 1043, 1477, 3129, 4431, 4619, 6541, 13857, 19623, 31439, 32333, 45787, 94317, 96999, 137361, 220073, 660219, 974609, 2923827, 6822263, 20466789]

約数ペア:

[(1, 20466789), (3, 6822263), (7, 2923827), (21, 974609), (31, 660219), (93, 220073), (149, 137361), (211, 96999), (217, 94317), (447, 45787), (633, 32333), (651, 31439), (1043, 19623), (1477, 13857), (3129, 6541), (4431, 4619)]