438940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1291}}^1$

素因数の和:1317

約数の個数: 24

約数和(自身を含む): 976752

約数和(自身を除く): 537812

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 1291, 2582, 5164, 6455, 12910, 21947, 25820, 43894, 87788, 109735, 219470, 438940]

約数ペア:

[(1, 438940), (2, 219470), (4, 109735), (5, 87788), (10, 43894), (17, 25820), (20, 21947), (34, 12910), (68, 6455), (85, 5164), (170, 2582), (340, 1291)]