21042008

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{202327}}^1$

素因数の和:202346

約数の個数: 16

約数和(自身を含む): 42488880

約数和(自身を除く): 21446872

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 202327, 404654, 809308, 1618616, 2630251, 5260502, 10521004, 21042008]

約数ペア:

[(1, 21042008), (2, 10521004), (4, 5260502), (8, 2630251), (13, 1618616), (26, 809308), (52, 404654), (104, 202327)]