20512742980

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{151}}^1\times {\mathrm{8501}}^1$

素因数の和:8725

約数の個数: 96

約数和(自身を含む): 46895127552

約数和(自身を除く): 26382384572

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 47, 68, 85, 94, 151, 170, 188, 235, 302, 340, 470, 604, 755, 799, 940, 1510, 1598, 2567, 3020, 3196, 3995, 5134, 7097, 7990, 8501, 10268, 12835, 14194, 15980, 17002, 25670, 28388, 34004, 35485, 42505, 51340, 70970, 85010, 120649, 141940, 144517, 170020, 241298, 289034, 399547, 482596, 578068, 603245, 722585, 799094, 1206490, 1283651, 1445170, 1598188, 1997735, 2412980, 2567302, 2890340, 3995470, 5134604, 6418255, 6792299, 7990940, 12836510, 13584598, 21822067, 25673020, 27169196, 33961495, 43644134, 60331597, 67922990, 87288268, 109110335, 120663194, 135845980, 218220670, 241326388, 301657985, 436441340, 603315970, 1025637149, 1206631940, 2051274298, 4102548596, 5128185745, 10256371490, 20512742980]

約数ペア:

[(1, 20512742980), (2, 10256371490), (4, 5128185745), (5, 4102548596), (10, 2051274298), (17, 1206631940), (20, 1025637149), (34, 603315970), (47, 436441340), (68, 301657985), (85, 241326388), (94, 218220670), (151, 135845980), (170, 120663194), (188, 109110335), (235, 87288268), (302, 67922990), (340, 60331597), (470, 43644134), (604, 33961495), (755, 27169196), (799, 25673020), (940, 21822067), (1510, 13584598), (1598, 12836510), (2567, 7990940), (3020, 6792299), (3196, 6418255), (3995, 5134604), (5134, 3995470), (7097, 2890340), (7990, 2567302), (8501, 2412980), (10268, 1997735), (12835, 1598188), (14194, 1445170), (15980, 1283651), (17002, 1206490), (25670, 799094), (28388, 722585), (34004, 603245), (35485, 578068), (42505, 482596), (51340, 399547), (70970, 289034), (85010, 241298), (120649, 170020), (141940, 144517)]