20104142780

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1531}}^1\times {\mathrm{8311}}^1$

素因数の和:9930

約数の個数: 48

約数和(自身を含む): 42786186240

約数和(自身を除く): 22682043460

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1531, 1580, 3062, 6124, 7655, 8311, 15310, 16622, 30620, 33244, 41555, 83110, 120949, 166220, 241898, 483796, 604745, 656569, 1209490, 1313138, 2418980, 2626276, 3282845, 6565690, 12724141, 13131380, 25448282, 50896564, 63620705, 127241410, 254482820, 1005207139, 2010414278, 4020828556, 5026035695, 10052071390, 20104142780]

約数ペア:

[(1, 20104142780), (2, 10052071390), (4, 5026035695), (5, 4020828556), (10, 2010414278), (20, 1005207139), (79, 254482820), (158, 127241410), (316, 63620705), (395, 50896564), (790, 25448282), (1531, 13131380), (1580, 12724141), (3062, 6565690), (6124, 3282845), (7655, 2626276), (8311, 2418980), (15310, 1313138), (16622, 1209490), (30620, 656569), (33244, 604745), (41555, 483796), (83110, 241898), (120949, 166220)]