21731560

素因数分解:

$2^3\times 5^1\times {\mathrm{543289}}^1$

素因数の和:543300

約数の個数: 16

約数和(自身を含む): 48896100

約数和(自身を除く): 27164540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 543289, 1086578, 2173156, 2716445, 4346312, 5432890, 10865780, 21731560]

約数ペア:

[(1, 21731560), (2, 10865780), (4, 5432890), (5, 4346312), (8, 2716445), (10, 2173156), (20, 1086578), (40, 543289)]