221405690

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{28349}}^1$

素因数の和:28438

約数の個数: 32

約数和(自身を含む): 440899200

約数和(自身を除く): 219493510

約数列:

[1, 2, 5, 10, 11, 22, 55, 71, 110, 142, 355, 710, 781, 1562, 3905, 7810, 28349, 56698, 141745, 283490, 311839, 623678, 1559195, 2012779, 3118390, 4025558, 10063895, 20127790, 22140569, 44281138, 110702845, 221405690]

約数ペア:

[(1, 221405690), (2, 110702845), (5, 44281138), (10, 22140569), (11, 20127790), (22, 10063895), (55, 4025558), (71, 3118390), (110, 2012779), (142, 1559195), (355, 623678), (710, 311839), (781, 283490), (1562, 141745), (3905, 56698), (7810, 28349)]