221779660

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{270463}}^1$

素因数の和:270513

約数の個数: 24

約数和(自身を含む): 477098496

約数和(自身を除く): 255318836

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 270463, 540926, 1081852, 1352315, 2704630, 5409260, 11088983, 22177966, 44355932, 55444915, 110889830, 221779660]

約数ペア:

[(1, 221779660), (2, 110889830), (4, 55444915), (5, 44355932), (10, 22177966), (20, 11088983), (41, 5409260), (82, 2704630), (164, 1352315), (205, 1081852), (410, 540926), (820, 270463)]