18885768385

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{397}}^1\times {\mathrm{27901}}^1$

素因数の和:28345

約数の個数: 32

約数和(自身を含む): 25585910784

約数和(自身を除く): 6700142399

約数列:

[1, 5, 11, 31, 55, 155, 341, 397, 1705, 1985, 4367, 12307, 21835, 27901, 61535, 135377, 139505, 306911, 676885, 864931, 1534555, 4324655, 9514241, 11076697, 47571205, 55383485, 121843667, 343377607, 609218335, 1716888035, 3777153677, 18885768385]

約数ペア:

[(1, 18885768385), (5, 3777153677), (11, 1716888035), (31, 609218335), (55, 343377607), (155, 121843667), (341, 55383485), (397, 47571205), (1705, 11076697), (1985, 9514241), (4367, 4324655), (12307, 1534555), (21835, 864931), (27901, 676885), (61535, 306911), (135377, 139505)]