21577040

素因数分解:

$2^4\times 5^1\times {\mathrm{269713}}^1$

素因数の和:269726

約数の個数: 20

約数和(自身を含む): 50166804

約数和(自身を除く): 28589764

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 269713, 539426, 1078852, 1348565, 2157704, 2697130, 4315408, 5394260, 10788520, 21577040]

約数ペア:

[(1, 21577040), (2, 10788520), (4, 5394260), (5, 4315408), (8, 2697130), (10, 2157704), (16, 1348565), (20, 1078852), (40, 539426), (80, 269713)]