21000837807

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{211}}^1\times {\mathrm{15731}}^1$

素因数の和:16004

約数の個数: 48

約数和(自身を含む): 32951617920

約数和(自身を除く): 11950780113

約数列:

[1, 3, 9, 19, 37, 57, 111, 171, 211, 333, 633, 703, 1899, 2109, 4009, 6327, 7807, 12027, 15731, 23421, 36081, 47193, 70263, 141579, 148333, 298889, 444999, 582047, 896667, 1334997, 1746141, 2690001, 3319241, 5238423, 9957723, 11058893, 29873169, 33176679, 63065579, 99530037, 122811917, 189196737, 368435751, 567590211, 1105307253, 2333426423, 7000279269, 21000837807]

約数ペア:

[(1, 21000837807), (3, 7000279269), (9, 2333426423), (19, 1105307253), (37, 567590211), (57, 368435751), (111, 189196737), (171, 122811917), (211, 99530037), (333, 63065579), (633, 33176679), (703, 29873169), (1899, 11058893), (2109, 9957723), (4009, 5238423), (6327, 3319241), (7807, 2690001), (12027, 1746141), (15731, 1334997), (23421, 896667), (36081, 582047), (47193, 444999), (70263, 298889), (141579, 148333)]