21441920

素因数分解:

$2^7\times 5^1\times {\mathrm{33503}}^1$

素因数の和:33522

約数の個数: 32

約数和(自身を含む): 51261120

約数和(自身を除く): 29819200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 33503, 67006, 134012, 167515, 268024, 335030, 536048, 670060, 1072096, 1340120, 2144192, 2680240, 4288384, 5360480, 10720960, 21441920]

約数ペア:

[(1, 21441920), (2, 10720960), (4, 5360480), (5, 4288384), (8, 2680240), (10, 2144192), (16, 1340120), (20, 1072096), (32, 670060), (40, 536048), (64, 335030), (80, 268024), (128, 167515), (160, 134012), (320, 67006), (640, 33503)]