20378580

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19979}}^1$

素因数の和:20008

約数の個数: 48

約数和(自身を含む): 60419520

約数和(自身を除く): 40040940

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, 1020, 19979, 39958, 59937, 79916, 99895, 119874, 199790, 239748, 299685, 339643, 399580, 599370, 679286, 1018929, 1198740, 1358572, 1698215, 2037858, 3396430, 4075716, 5094645, 6792860, 10189290, 20378580]

約数ペア:

[(1, 20378580), (2, 10189290), (3, 6792860), (4, 5094645), (5, 4075716), (6, 3396430), (10, 2037858), (12, 1698215), (15, 1358572), (17, 1198740), (20, 1018929), (30, 679286), (34, 599370), (51, 399580), (60, 339643), (68, 299685), (85, 239748), (102, 199790), (170, 119874), (204, 99895), (255, 79916), (340, 59937), (510, 39958), (1020, 19979)]