21290808

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{281}}^1$

素因数の和:349

約数の個数: 128

約数和(自身を含む): 68221440

約数和(自身を除く): 46930632

約数列:

[1, 2, 3, 4, 6, 7, 8, 11, 12, 14, 21, 22, 24, 28, 33, 41, 42, 44, 56, 66, 77, 82, 84, 88, 123, 132, 154, 164, 168, 231, 246, 264, 281, 287, 308, 328, 451, 462, 492, 562, 574, 616, 843, 861, 902, 924, 984, 1124, 1148, 1353, 1686, 1722, 1804, 1848, 1967, 2248, 2296, 2706, 3091, 3157, 3372, 3444, 3608, 3934, 5412, 5901, 6182, 6314, 6744, 6888, 7868, 9273, 9471, 10824, 11521, 11802, 12364, 12628, 15736, 18546, 18942, 21637, 23042, 23604, 24728, 25256, 34563, 37092, 37884, 43274, 46084, 47208, 64911, 69126, 74184, 75768, 80647, 86548, 92168, 126731, 129822, 138252, 161294, 173096, 241941, 253462, 259644, 276504, 322588, 380193, 483882, 506924, 519288, 645176, 760386, 887117, 967764, 1013848, 1520772, 1774234, 1935528, 2661351, 3041544, 3548468, 5322702, 7096936, 10645404, 21290808]

約数ペア:

[(1, 21290808), (2, 10645404), (3, 7096936), (4, 5322702), (6, 3548468), (7, 3041544), (8, 2661351), (11, 1935528), (12, 1774234), (14, 1520772), (21, 1013848), (22, 967764), (24, 887117), (28, 760386), (33, 645176), (41, 519288), (42, 506924), (44, 483882), (56, 380193), (66, 322588), (77, 276504), (82, 259644), (84, 253462), (88, 241941), (123, 173096), (132, 161294), (154, 138252), (164, 129822), (168, 126731), (231, 92168), (246, 86548), (264, 80647), (281, 75768), (287, 74184), (308, 69126), (328, 64911), (451, 47208), (462, 46084), (492, 43274), (562, 37884), (574, 37092), (616, 34563), (843, 25256), (861, 24728), (902, 23604), (924, 23042), (984, 21637), (1124, 18942), (1148, 18546), (1353, 15736), (1686, 12628), (1722, 12364), (1804, 11802), (1848, 11521), (1967, 10824), (2248, 9471), (2296, 9273), (2706, 7868), (3091, 6888), (3157, 6744), (3372, 6314), (3444, 6182), (3608, 5901), (3934, 5412)]