21279872

素因数分解:

$2^7\times {\mathrm{83}}^1\times {\mathrm{2003}}^1$

素因数の和:2100

約数の個数: 32

約数和(自身を含む): 42925680

約数和(自身を除く): 21645808

約数列:

[1, 2, 4, 8, 16, 32, 64, 83, 128, 166, 332, 664, 1328, 2003, 2656, 4006, 5312, 8012, 10624, 16024, 32048, 64096, 128192, 166249, 256384, 332498, 664996, 1329992, 2659984, 5319968, 10639936, 21279872]

約数ペア:

[(1, 21279872), (2, 10639936), (4, 5319968), (8, 2659984), (16, 1329992), (32, 664996), (64, 332498), (83, 256384), (128, 166249), (166, 128192), (332, 64096), (664, 32048), (1328, 16024), (2003, 10624), (2656, 8012), (4006, 5312)]