8439140

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{24821}}^1$

素因数の和:24847

約数の個数: 24

約数和(自身を含む): 18765432

約数和(自身を除く): 10326292

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 24821, 49642, 99284, 124105, 248210, 421957, 496420, 843914, 1687828, 2109785, 4219570, 8439140]

約数ペア:

[(1, 8439140), (2, 4219570), (4, 2109785), (5, 1687828), (10, 843914), (17, 496420), (20, 421957), (34, 248210), (68, 124105), (85, 99284), (170, 49642), (340, 24821)]