21000879824

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{1489}}^1\times {\mathrm{51853}}^1$

素因数の和:53367

約数の個数: 40

約数和(自身を含む): 43112452680

約数和(自身を除く): 22111572856

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 1489, 2978, 5956, 11912, 23824, 25313, 50626, 51853, 101252, 103706, 202504, 207412, 405008, 414824, 829648, 881501, 1763002, 3526004, 7052008, 14104016, 77209117, 154418234, 308836468, 617672936, 1235345872, 1312554989, 2625109978, 5250219956, 10500439912, 21000879824]

約数ペア:

[(1, 21000879824), (2, 10500439912), (4, 5250219956), (8, 2625109978), (16, 1312554989), (17, 1235345872), (34, 617672936), (68, 308836468), (136, 154418234), (272, 77209117), (1489, 14104016), (2978, 7052008), (5956, 3526004), (11912, 1763002), (23824, 881501), (25313, 829648), (50626, 414824), (51853, 405008), (101252, 207412), (103706, 202504)]