21156616

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{203429}}^1$

素因数の和:203448

約数の個数: 16

約数和(自身を含む): 42720300

約数和(自身を除く): 21563684

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 203429, 406858, 813716, 1627432, 2644577, 5289154, 10578308, 21156616]

約数ペア:

[(1, 21156616), (2, 10578308), (4, 5289154), (8, 2644577), (13, 1627432), (26, 813716), (52, 406858), (104, 203429)]