21742790

素因数分解:

$2^1\times 5^1\times {\mathrm{541}}^1\times {\mathrm{4019}}^1$

素因数の和:4567

約数の個数: 16

約数和(自身を含む): 39219120

約数和(自身を除く): 17476330

約数列:

[1, 2, 5, 10, 541, 1082, 2705, 4019, 5410, 8038, 20095, 40190, 2174279, 4348558, 10871395, 21742790]

約数ペア:

[(1, 21742790), (2, 10871395), (5, 4348558), (10, 2174279), (541, 40190), (1082, 20095), (2705, 8038), (4019, 5410)]