19949930

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1993}}^1$

素因数の和:2031

約数の個数: 64

約数和(自身を含む): 48238848

約数和(自身を除く): 28288918

約数列:

[1, 2, 5, 7, 10, 11, 13, 14, 22, 26, 35, 55, 65, 70, 77, 91, 110, 130, 143, 154, 182, 286, 385, 455, 715, 770, 910, 1001, 1430, 1993, 2002, 3986, 5005, 9965, 10010, 13951, 19930, 21923, 25909, 27902, 43846, 51818, 69755, 109615, 129545, 139510, 153461, 181363, 219230, 259090, 284999, 306922, 362726, 569998, 767305, 906815, 1424995, 1534610, 1813630, 1994993, 2849990, 3989986, 9974965, 19949930]

約数ペア:

[(1, 19949930), (2, 9974965), (5, 3989986), (7, 2849990), (10, 1994993), (11, 1813630), (13, 1534610), (14, 1424995), (22, 906815), (26, 767305), (35, 569998), (55, 362726), (65, 306922), (70, 284999), (77, 259090), (91, 219230), (110, 181363), (130, 153461), (143, 139510), (154, 129545), (182, 109615), (286, 69755), (385, 51818), (455, 43846), (715, 27902), (770, 25909), (910, 21923), (1001, 19930), (1430, 13951), (1993, 10010), (2002, 9965), (3986, 5005)]