20795789600

素因数分解:

$2^5\times 5^2\times {\mathrm{839}}^1\times {\mathrm{30983}}^1$

素因数の和:31842

約数の個数: 72

約数和(自身を含む): 50829871680

約数和(自身を除く): 30034082080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 400, 800, 839, 1678, 3356, 4195, 6712, 8390, 13424, 16780, 20975, 26848, 30983, 33560, 41950, 61966, 67120, 83900, 123932, 134240, 154915, 167800, 247864, 309830, 335600, 495728, 619660, 671200, 774575, 991456, 1239320, 1549150, 2478640, 3098300, 4957280, 6196600, 12393200, 24786400, 25994737, 51989474, 103978948, 129973685, 207957896, 259947370, 415915792, 519894740, 649868425, 831831584, 1039789480, 1299736850, 2079578960, 2599473700, 4159157920, 5198947400, 10397894800, 20795789600]

約数ペア:

[(1, 20795789600), (2, 10397894800), (4, 5198947400), (5, 4159157920), (8, 2599473700), (10, 2079578960), (16, 1299736850), (20, 1039789480), (25, 831831584), (32, 649868425), (40, 519894740), (50, 415915792), (80, 259947370), (100, 207957896), (160, 129973685), (200, 103978948), (400, 51989474), (800, 25994737), (839, 24786400), (1678, 12393200), (3356, 6196600), (4195, 4957280), (6712, 3098300), (8390, 2478640), (13424, 1549150), (16780, 1239320), (20975, 991456), (26848, 774575), (30983, 671200), (33560, 619660), (41950, 495728), (61966, 335600), (67120, 309830), (83900, 247864), (123932, 167800), (134240, 154915)]