21520480

素因数分解:

$2^5\times 5^1\times {\mathrm{134503}}^1$

素因数の和:134518

約数の個数: 24

約数和(自身を含む): 50842512

約数和(自身を除く): 29322032

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 134503, 269006, 538012, 672515, 1076024, 1345030, 2152048, 2690060, 4304096, 5380120, 10760240, 21520480]

約数ペア:

[(1, 21520480), (2, 10760240), (4, 5380120), (5, 4304096), (8, 2690060), (10, 2152048), (16, 1345030), (20, 1076024), (32, 672515), (40, 538012), (80, 269006), (160, 134503)]