20199340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{223}}^1\times {\mathrm{647}}^1$

素因数の和:886

約数の個数: 48

約数和(自身を含む): 48771072

約数和(自身を除く): 28571732

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 223, 446, 647, 892, 1115, 1294, 1561, 2230, 2588, 3122, 3235, 4460, 4529, 6244, 6470, 7805, 9058, 12940, 15610, 18116, 22645, 31220, 45290, 90580, 144281, 288562, 577124, 721405, 1009967, 1442810, 2019934, 2885620, 4039868, 5049835, 10099670, 20199340]

約数ペア:

[(1, 20199340), (2, 10099670), (4, 5049835), (5, 4039868), (7, 2885620), (10, 2019934), (14, 1442810), (20, 1009967), (28, 721405), (35, 577124), (70, 288562), (140, 144281), (223, 90580), (446, 45290), (647, 31220), (892, 22645), (1115, 18116), (1294, 15610), (1561, 12940), (2230, 9058), (2588, 7805), (3122, 6470), (3235, 6244), (4460, 4529)]