21680920

素因数分解:

$2^3\times 5^1\times {\mathrm{542023}}^1$

素因数の和:542034

約数の個数: 16

約数和(自身を含む): 48782160

約数和(自身を除く): 27101240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 542023, 1084046, 2168092, 2710115, 4336184, 5420230, 10840460, 21680920]

約数ペア:

[(1, 21680920), (2, 10840460), (4, 5420230), (5, 4336184), (8, 2710115), (10, 2168092), (20, 1084046), (40, 542023)]