21522159

素因数分解:

$3^3\times {\mathrm{71}}^1\times {\mathrm{103}}^1\times {\mathrm{109}}^1$

素因数の和:292

約数の個数: 32

約数和(自身を含む): 32947200

約数和(自身を除く): 11425041

約数列:

[1, 3, 9, 27, 71, 103, 109, 213, 309, 327, 639, 927, 981, 1917, 2781, 2943, 7313, 7739, 11227, 21939, 23217, 33681, 65817, 69651, 101043, 197451, 208953, 303129, 797117, 2391351, 7174053, 21522159]

約数ペア:

[(1, 21522159), (3, 7174053), (9, 2391351), (27, 797117), (71, 303129), (103, 208953), (109, 197451), (213, 101043), (309, 69651), (327, 65817), (639, 33681), (927, 23217), (981, 21939), (1917, 11227), (2781, 7739), (2943, 7313)]