21000751970

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{107}}^1\times {\mathrm{37963}}^1$

素因数の和:38135

約数の個数: 64

約数和(自身を含む): 42509961216

約数和(自身を除く): 21509209246

約数列:

[1, 2, 5, 10, 11, 22, 47, 55, 94, 107, 110, 214, 235, 470, 517, 535, 1034, 1070, 1177, 2354, 2585, 5029, 5170, 5885, 10058, 11770, 25145, 37963, 50290, 55319, 75926, 110638, 189815, 276595, 379630, 417593, 553190, 835186, 1784261, 2087965, 3568522, 4062041, 4175930, 8124082, 8921305, 17842610, 19626871, 20310205, 39253742, 40620410, 44682451, 89364902, 98134355, 190915927, 196268710, 223412255, 381831854, 446824510, 954579635, 1909159270, 2100075197, 4200150394, 10500375985, 21000751970]

約数ペア:

[(1, 21000751970), (2, 10500375985), (5, 4200150394), (10, 2100075197), (11, 1909159270), (22, 954579635), (47, 446824510), (55, 381831854), (94, 223412255), (107, 196268710), (110, 190915927), (214, 98134355), (235, 89364902), (470, 44682451), (517, 40620410), (535, 39253742), (1034, 20310205), (1070, 19626871), (1177, 17842610), (2354, 8921305), (2585, 8124082), (5029, 4175930), (5170, 4062041), (5885, 3568522), (10058, 2087965), (11770, 1784261), (25145, 835186), (37963, 553190), (50290, 417593), (55319, 379630), (75926, 276595), (110638, 189815)]