20696140

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{2099}}^1$

素因数の和:2154

約数の個数: 48

約数和(自身を含む): 47628000

約数和(自身を除く): 26931860

約数列:

[1, 2, 4, 5, 10, 17, 20, 29, 34, 58, 68, 85, 116, 145, 170, 290, 340, 493, 580, 986, 1972, 2099, 2465, 4198, 4930, 8396, 9860, 10495, 20990, 35683, 41980, 60871, 71366, 121742, 142732, 178415, 243484, 304355, 356830, 608710, 713660, 1034807, 1217420, 2069614, 4139228, 5174035, 10348070, 20696140]

約数ペア:

[(1, 20696140), (2, 10348070), (4, 5174035), (5, 4139228), (10, 2069614), (17, 1217420), (20, 1034807), (29, 713660), (34, 608710), (58, 356830), (68, 304355), (85, 243484), (116, 178415), (145, 142732), (170, 121742), (290, 71366), (340, 60871), (493, 41980), (580, 35683), (986, 20990), (1972, 10495), (2099, 9860), (2465, 8396), (4198, 4930)]