21219744

素因数分解:

$2^5\times 3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{347}}^1$

素因数の和:387

約数の個数: 144

約数和(自身を含む): 69981408

約数和(自身を除く): 48761664

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 13, 14, 16, 21, 24, 26, 28, 32, 39, 42, 48, 49, 52, 56, 78, 84, 91, 96, 98, 104, 112, 147, 156, 168, 182, 196, 208, 224, 273, 294, 312, 336, 347, 364, 392, 416, 546, 588, 624, 637, 672, 694, 728, 784, 1041, 1092, 1176, 1248, 1274, 1388, 1456, 1568, 1911, 2082, 2184, 2352, 2429, 2548, 2776, 2912, 3822, 4164, 4368, 4511, 4704, 4858, 5096, 5552, 7287, 7644, 8328, 8736, 9022, 9716, 10192, 11104, 13533, 14574, 15288, 16656, 17003, 18044, 19432, 20384, 27066, 29148, 30576, 31577, 33312, 34006, 36088, 38864, 51009, 54132, 58296, 61152, 63154, 68012, 72176, 77728, 94731, 102018, 108264, 116592, 126308, 136024, 144352, 189462, 204036, 216528, 221039, 233184, 252616, 272048, 378924, 408072, 433056, 442078, 505232, 544096, 663117, 757848, 816144, 884156, 1010464, 1326234, 1515696, 1632288, 1768312, 2652468, 3031392, 3536624, 5304936, 7073248, 10609872, 21219744]

約数ペア:

[(1, 21219744), (2, 10609872), (3, 7073248), (4, 5304936), (6, 3536624), (7, 3031392), (8, 2652468), (12, 1768312), (13, 1632288), (14, 1515696), (16, 1326234), (21, 1010464), (24, 884156), (26, 816144), (28, 757848), (32, 663117), (39, 544096), (42, 505232), (48, 442078), (49, 433056), (52, 408072), (56, 378924), (78, 272048), (84, 252616), (91, 233184), (96, 221039), (98, 216528), (104, 204036), (112, 189462), (147, 144352), (156, 136024), (168, 126308), (182, 116592), (196, 108264), (208, 102018), (224, 94731), (273, 77728), (294, 72176), (312, 68012), (336, 63154), (347, 61152), (364, 58296), (392, 54132), (416, 51009), (546, 38864), (588, 36088), (624, 34006), (637, 33312), (672, 31577), (694, 30576), (728, 29148), (784, 27066), (1041, 20384), (1092, 19432), (1176, 18044), (1248, 17003), (1274, 16656), (1388, 15288), (1456, 14574), (1568, 13533), (1911, 11104), (2082, 10192), (2184, 9716), (2352, 9022), (2429, 8736), (2548, 8328), (2776, 7644), (2912, 7287), (3822, 5552), (4164, 5096), (4368, 4858), (4511, 4704)]