20984688

素因数分解:

$2^4\times 3^2\times {\mathrm{43}}^1\times {\mathrm{3389}}^1$

素因数の和:3446

約数の個数: 60

約数和(自身を含む): 60111480

約数和(自身を除く): 39126792

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 43, 48, 72, 86, 129, 144, 172, 258, 344, 387, 516, 688, 774, 1032, 1548, 2064, 3096, 3389, 6192, 6778, 10167, 13556, 20334, 27112, 30501, 40668, 54224, 61002, 81336, 122004, 145727, 162672, 244008, 291454, 437181, 488016, 582908, 874362, 1165816, 1311543, 1748724, 2331632, 2623086, 3497448, 5246172, 6994896, 10492344, 20984688]

約数ペア:

[(1, 20984688), (2, 10492344), (3, 6994896), (4, 5246172), (6, 3497448), (8, 2623086), (9, 2331632), (12, 1748724), (16, 1311543), (18, 1165816), (24, 874362), (36, 582908), (43, 488016), (48, 437181), (72, 291454), (86, 244008), (129, 162672), (144, 145727), (172, 122004), (258, 81336), (344, 61002), (387, 54224), (516, 40668), (688, 30501), (774, 27112), (1032, 20334), (1548, 13556), (2064, 10167), (3096, 6778), (3389, 6192)]