20216502579

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^2\times {\mathrm{139987}}^1$

素因数の和:140056

約数の個数: 48

約数和(自身を含む): 34681187072

約数和(自身を除く): 14464684493

約数列:

[1, 3, 7, 13, 21, 23, 39, 69, 91, 161, 273, 299, 483, 529, 897, 1587, 2093, 3703, 6279, 6877, 11109, 20631, 48139, 139987, 144417, 419961, 979909, 1819831, 2939727, 3219701, 5459493, 9659103, 12738817, 22537907, 38216451, 41856113, 67613721, 74053123, 125568339, 222159369, 292992791, 518371861, 878978373, 962690599, 1555115583, 2888071797, 6738834193, 20216502579]

約数ペア:

[(1, 20216502579), (3, 6738834193), (7, 2888071797), (13, 1555115583), (21, 962690599), (23, 878978373), (39, 518371861), (69, 292992791), (91, 222159369), (161, 125568339), (273, 74053123), (299, 67613721), (483, 41856113), (529, 38216451), (897, 22537907), (1587, 12738817), (2093, 9659103), (3703, 5459493), (6279, 3219701), (6877, 2939727), (11109, 1819831), (20631, 979909), (48139, 419961), (139987, 144417)]