21403376

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{83}}^1\times {\mathrm{227}}^1$

素因数の和:389

約数の個数: 40

約数和(自身を含む): 42747264

約数和(自身を除く): 21343888

約数列:

[1, 2, 4, 8, 16, 71, 83, 142, 166, 227, 284, 332, 454, 568, 664, 908, 1136, 1328, 1816, 3632, 5893, 11786, 16117, 18841, 23572, 32234, 37682, 47144, 64468, 75364, 94288, 128936, 150728, 257872, 301456, 1337711, 2675422, 5350844, 10701688, 21403376]

約数ペア:

[(1, 21403376), (2, 10701688), (4, 5350844), (8, 2675422), (16, 1337711), (71, 301456), (83, 257872), (142, 150728), (166, 128936), (227, 94288), (284, 75364), (332, 64468), (454, 47144), (568, 37682), (664, 32234), (908, 23572), (1136, 18841), (1328, 16117), (1816, 11786), (3632, 5893)]