19906760

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{131}}^2$

素因数の和:302

約数の個数: 48

約数和(自身を含む): 46691100

約数和(自身を除く): 26784340

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 116, 131, 145, 232, 262, 290, 524, 580, 655, 1048, 1160, 1310, 2620, 3799, 5240, 7598, 15196, 17161, 18995, 30392, 34322, 37990, 68644, 75980, 85805, 137288, 151960, 171610, 343220, 497669, 686440, 995338, 1990676, 2488345, 3981352, 4976690, 9953380, 19906760]

約数ペア:

[(1, 19906760), (2, 9953380), (4, 4976690), (5, 3981352), (8, 2488345), (10, 1990676), (20, 995338), (29, 686440), (40, 497669), (58, 343220), (116, 171610), (131, 151960), (145, 137288), (232, 85805), (262, 75980), (290, 68644), (524, 37990), (580, 34322), (655, 30392), (1048, 18995), (1160, 17161), (1310, 15196), (2620, 7598), (3799, 5240)]