20217456

素因数分解:

$2^4\times 3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{647}}^1$

素因数の和:699

約数の個数: 120

約数和(自身を含む): 66852864

約数和(自身を除く): 46635408

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 16, 18, 21, 24, 28, 31, 36, 42, 48, 56, 62, 63, 72, 84, 93, 112, 124, 126, 144, 168, 186, 217, 248, 252, 279, 336, 372, 434, 496, 504, 558, 647, 651, 744, 868, 1008, 1116, 1294, 1302, 1488, 1736, 1941, 1953, 2232, 2588, 2604, 3472, 3882, 3906, 4464, 4529, 5176, 5208, 5823, 7764, 7812, 9058, 10352, 10416, 11646, 13587, 15528, 15624, 18116, 20057, 23292, 27174, 31056, 31248, 36232, 40114, 40761, 46584, 54348, 60171, 72464, 80228, 81522, 93168, 108696, 120342, 140399, 160456, 163044, 180513, 217392, 240684, 280798, 320912, 326088, 361026, 421197, 481368, 561596, 652176, 722052, 842394, 962736, 1123192, 1263591, 1444104, 1684788, 2246384, 2527182, 2888208, 3369576, 5054364, 6739152, 10108728, 20217456]

約数ペア:

[(1, 20217456), (2, 10108728), (3, 6739152), (4, 5054364), (6, 3369576), (7, 2888208), (8, 2527182), (9, 2246384), (12, 1684788), (14, 1444104), (16, 1263591), (18, 1123192), (21, 962736), (24, 842394), (28, 722052), (31, 652176), (36, 561596), (42, 481368), (48, 421197), (56, 361026), (62, 326088), (63, 320912), (72, 280798), (84, 240684), (93, 217392), (112, 180513), (124, 163044), (126, 160456), (144, 140399), (168, 120342), (186, 108696), (217, 93168), (248, 81522), (252, 80228), (279, 72464), (336, 60171), (372, 54348), (434, 46584), (496, 40761), (504, 40114), (558, 36232), (647, 31248), (651, 31056), (744, 27174), (868, 23292), (1008, 20057), (1116, 18116), (1294, 15624), (1302, 15528), (1488, 13587), (1736, 11646), (1941, 10416), (1953, 10352), (2232, 9058), (2588, 7812), (2604, 7764), (3472, 5823), (3882, 5208), (3906, 5176), (4464, 4529)]