21739952

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{5501}}^1$

素因数の和:5541

約数の個数: 40

約数和(自身を含む): 47757360

約数和(自身を除く): 26017408

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 52, 76, 104, 152, 208, 247, 304, 494, 988, 1976, 3952, 5501, 11002, 22004, 44008, 71513, 88016, 104519, 143026, 209038, 286052, 418076, 572104, 836152, 1144208, 1358747, 1672304, 2717494, 5434988, 10869976, 21739952]

約数ペア:

[(1, 21739952), (2, 10869976), (4, 5434988), (8, 2717494), (13, 1672304), (16, 1358747), (19, 1144208), (26, 836152), (38, 572104), (52, 418076), (76, 286052), (104, 209038), (152, 143026), (208, 104519), (247, 88016), (304, 71513), (494, 44008), (988, 22004), (1976, 11002), (3952, 5501)]