21786544

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{104743}}^1$

素因数の和:104764

約数の個数: 20

約数和(自身を含む): 45458896

約数和(自身を除く): 23672352

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 104743, 209486, 418972, 837944, 1361659, 1675888, 2723318, 5446636, 10893272, 21786544]

約数ペア:

[(1, 21786544), (2, 10893272), (4, 5446636), (8, 2723318), (13, 1675888), (16, 1361659), (26, 837944), (52, 418972), (104, 209486), (208, 104743)]