21873915

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{293}}^1$

素因数の和:393

約数の個数: 64

約数和(自身を含む): 45158400

約数和(自身を除く): 23284485

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 79, 105, 135, 189, 237, 293, 315, 395, 553, 711, 879, 945, 1185, 1465, 1659, 2051, 2133, 2637, 2765, 3555, 4395, 4977, 6153, 7911, 8295, 10255, 10665, 13185, 14931, 18459, 23147, 24885, 30765, 39555, 55377, 69441, 74655, 92295, 115735, 162029, 208323, 276885, 347205, 486087, 624969, 810145, 1041615, 1458261, 2430435, 3124845, 4374783, 7291305, 21873915]

約数ペア:

[(1, 21873915), (3, 7291305), (5, 4374783), (7, 3124845), (9, 2430435), (15, 1458261), (21, 1041615), (27, 810145), (35, 624969), (45, 486087), (63, 347205), (79, 276885), (105, 208323), (135, 162029), (189, 115735), (237, 92295), (293, 74655), (315, 69441), (395, 55377), (553, 39555), (711, 30765), (879, 24885), (945, 23147), (1185, 18459), (1465, 14931), (1659, 13185), (2051, 10665), (2133, 10255), (2637, 8295), (2765, 7911), (3555, 6153), (4395, 4977)]