678993

素因数分解:

$3^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{149}}^1$

素因数の和:197

約数の個数: 24

約数和(自身を含む): 1094400

約数和(自身を除く): 415407

約数列:

[1, 3, 7, 21, 31, 49, 93, 147, 149, 217, 447, 651, 1043, 1519, 3129, 4557, 4619, 7301, 13857, 21903, 32333, 96999, 226331, 678993]

約数ペア:

[(1, 678993), (3, 226331), (7, 96999), (21, 32333), (31, 21903), (49, 13857), (93, 7301), (147, 4619), (149, 4557), (217, 3129), (447, 1519), (651, 1043)]