18573681

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1\times {\mathrm{277}}^1$

素因数の和:421

約数の個数: 32

約数和(自身を含む): 29605888

約数和(自身を除く): 11032207

約数列:

[1, 3, 7, 21, 31, 93, 103, 217, 277, 309, 651, 721, 831, 1939, 2163, 3193, 5817, 8587, 9579, 22351, 25761, 28531, 60109, 67053, 85593, 180327, 199717, 599151, 884461, 2653383, 6191227, 18573681]

約数ペア:

[(1, 18573681), (3, 6191227), (7, 2653383), (21, 884461), (31, 599151), (93, 199717), (103, 180327), (217, 85593), (277, 67053), (309, 60109), (651, 28531), (721, 25761), (831, 22351), (1939, 9579), (2163, 8587), (3193, 5817)]