20911300

素因数分解:

$2^2\times 5^2\times {\mathrm{79}}^1\times {\mathrm{2647}}^1$

素因数の和:2740

約数の個数: 36

約数和(自身を含む): 45969280

約数和(自身を除く): 25057980

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 79, 100, 158, 316, 395, 790, 1580, 1975, 2647, 3950, 5294, 7900, 10588, 13235, 26470, 52940, 66175, 132350, 209113, 264700, 418226, 836452, 1045565, 2091130, 4182260, 5227825, 10455650, 20911300]

約数ペア:

[(1, 20911300), (2, 10455650), (4, 5227825), (5, 4182260), (10, 2091130), (20, 1045565), (25, 836452), (50, 418226), (79, 264700), (100, 209113), (158, 132350), (316, 66175), (395, 52940), (790, 26470), (1580, 13235), (1975, 10588), (2647, 7900), (3950, 5294)]