21820186544

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{104904743}}^1$

素因数の和:104904764

約数の個数: 20

約数和(自身を含む): 45528658896

約数和(自身を除く): 23708472352

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 104904743, 209809486, 419618972, 839237944, 1363761659, 1678475888, 2727523318, 5455046636, 10910093272, 21820186544]

約数ペア:

[(1, 21820186544), (2, 10910093272), (4, 5455046636), (8, 2727523318), (13, 1678475888), (16, 1363761659), (26, 839237944), (52, 419618972), (104, 209809486), (208, 104904743)]