778858580

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{569}}^1\times {\mathrm{769}}^1$

素因数の和:1436

約数の個数: 48

約数和(自身を含む): 1659042000

約数和(自身を除く): 880183420

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 569, 769, 890, 1138, 1538, 1780, 2276, 2845, 3076, 3845, 5690, 7690, 11380, 15380, 50641, 68441, 101282, 136882, 202564, 253205, 273764, 342205, 437561, 506410, 684410, 875122, 1012820, 1368820, 1750244, 2187805, 4375610, 8751220, 38942929, 77885858, 155771716, 194714645, 389429290, 778858580]

約数ペア:

[(1, 778858580), (2, 389429290), (4, 194714645), (5, 155771716), (10, 77885858), (20, 38942929), (89, 8751220), (178, 4375610), (356, 2187805), (445, 1750244), (569, 1368820), (769, 1012820), (890, 875122), (1138, 684410), (1538, 506410), (1780, 437561), (2276, 342205), (2845, 273764), (3076, 253205), (3845, 202564), (5690, 136882), (7690, 101282), (11380, 68441), (15380, 50641)]