21201378

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1$

素因数の和:128

約数の個数: 96

約数和(自身を含む): 51710400

約数和(自身を除く): 30509022

約数列:

[1, 2, 3, 6, 11, 19, 22, 29, 33, 38, 53, 57, 58, 66, 87, 106, 114, 121, 159, 174, 209, 242, 318, 319, 363, 418, 551, 583, 627, 638, 726, 957, 1007, 1102, 1166, 1254, 1537, 1653, 1749, 1914, 2014, 2299, 3021, 3074, 3306, 3498, 3509, 4598, 4611, 6042, 6061, 6413, 6897, 7018, 9222, 10527, 11077, 12122, 12826, 13794, 16907, 18183, 19239, 21054, 22154, 29203, 33231, 33814, 36366, 38478, 50721, 58406, 66462, 66671, 87609, 101442, 121847, 133342, 175218, 185977, 200013, 243694, 321233, 365541, 371954, 400026, 557931, 642466, 731082, 963699, 1115862, 1927398, 3533563, 7067126, 10600689, 21201378]

約数ペア:

[(1, 21201378), (2, 10600689), (3, 7067126), (6, 3533563), (11, 1927398), (19, 1115862), (22, 963699), (29, 731082), (33, 642466), (38, 557931), (53, 400026), (57, 371954), (58, 365541), (66, 321233), (87, 243694), (106, 200013), (114, 185977), (121, 175218), (159, 133342), (174, 121847), (209, 101442), (242, 87609), (318, 66671), (319, 66462), (363, 58406), (418, 50721), (551, 38478), (583, 36366), (627, 33814), (638, 33231), (726, 29203), (957, 22154), (1007, 21054), (1102, 19239), (1166, 18183), (1254, 16907), (1537, 13794), (1653, 12826), (1749, 12122), (1914, 11077), (2014, 10527), (2299, 9222), (3021, 7018), (3074, 6897), (3306, 6413), (3498, 6061), (3509, 6042), (4598, 4611)]