21185476

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{5581}}^1$

素因数の和:5671

約数の個数: 24

約数和(自身を含む): 40480664

約数和(自身を除く): 19295188

約数列:

[1, 2, 4, 13, 26, 52, 73, 146, 292, 949, 1898, 3796, 5581, 11162, 22324, 72553, 145106, 290212, 407413, 814826, 1629652, 5296369, 10592738, 21185476]

約数ペア:

[(1, 21185476), (2, 10592738), (4, 5296369), (13, 1629652), (26, 814826), (52, 407413), (73, 290212), (146, 145106), (292, 72553), (949, 22324), (1898, 11162), (3796, 5581)]