21056768

素因数分解:

$2^8\times {\mathrm{83}}^1\times {\mathrm{991}}^1$

素因数の和:1090

約数の個数: 36

約数和(自身を含む): 42580608

約数和(自身を除く): 21523840

約数列:

[1, 2, 4, 8, 16, 32, 64, 83, 128, 166, 256, 332, 664, 991, 1328, 1982, 2656, 3964, 5312, 7928, 10624, 15856, 21248, 31712, 63424, 82253, 126848, 164506, 253696, 329012, 658024, 1316048, 2632096, 5264192, 10528384, 21056768]

約数ペア:

[(1, 21056768), (2, 10528384), (4, 5264192), (8, 2632096), (16, 1316048), (32, 658024), (64, 329012), (83, 253696), (128, 164506), (166, 126848), (256, 82253), (332, 63424), (664, 31712), (991, 21248), (1328, 15856), (1982, 10624), (2656, 7928), (3964, 5312)]