821205

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1$

素因数の和:111

約数の個数: 64

約数和(自身を含む): 1843200

約数和(自身を除く): 1021995

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 27, 33, 35, 45, 55, 63, 77, 79, 99, 105, 135, 165, 189, 231, 237, 297, 315, 385, 395, 495, 553, 693, 711, 869, 945, 1155, 1185, 1485, 1659, 2079, 2133, 2607, 2765, 3465, 3555, 4345, 4977, 6083, 7821, 8295, 10395, 10665, 13035, 14931, 18249, 23463, 24885, 30415, 39105, 54747, 74655, 91245, 117315, 164241, 273735, 821205]

約数ペア:

[(1, 821205), (3, 273735), (5, 164241), (7, 117315), (9, 91245), (11, 74655), (15, 54747), (21, 39105), (27, 30415), (33, 24885), (35, 23463), (45, 18249), (55, 14931), (63, 13035), (77, 10665), (79, 10395), (99, 8295), (105, 7821), (135, 6083), (165, 4977), (189, 4345), (231, 3555), (237, 3465), (297, 2765), (315, 2607), (385, 2133), (395, 2079), (495, 1659), (553, 1485), (693, 1185), (711, 1155), (869, 945)]