21135459

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{241}}^1$

素因数の和:339

約数の個数: 32

約数和(自身を含む): 31223808

約数和(自身を除く): 10088349

約数列:

[1, 3, 23, 31, 41, 69, 93, 123, 241, 713, 723, 943, 1271, 2139, 2829, 3813, 5543, 7471, 9881, 16629, 22413, 29233, 29643, 87699, 171833, 227263, 306311, 515499, 681789, 918933, 7045153, 21135459]

約数ペア:

[(1, 21135459), (3, 7045153), (23, 918933), (31, 681789), (41, 515499), (69, 306311), (93, 227263), (123, 171833), (241, 87699), (713, 29643), (723, 29233), (943, 22413), (1271, 16629), (2139, 9881), (2829, 7471), (3813, 5543)]