21680748

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{1093}}^1$

素因数の和:1151

約数の個数: 72

約数和(自身を含む): 59732400

約数和(自身を除く): 38051652

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 29, 36, 38, 57, 58, 76, 87, 114, 116, 171, 174, 228, 261, 342, 348, 522, 551, 684, 1044, 1093, 1102, 1653, 2186, 2204, 3279, 3306, 4372, 4959, 6558, 6612, 9837, 9918, 13116, 19674, 19836, 20767, 31697, 39348, 41534, 62301, 63394, 83068, 95091, 124602, 126788, 186903, 190182, 249204, 285273, 373806, 380364, 570546, 602243, 747612, 1141092, 1204486, 1806729, 2408972, 3613458, 5420187, 7226916, 10840374, 21680748]

約数ペア:

[(1, 21680748), (2, 10840374), (3, 7226916), (4, 5420187), (6, 3613458), (9, 2408972), (12, 1806729), (18, 1204486), (19, 1141092), (29, 747612), (36, 602243), (38, 570546), (57, 380364), (58, 373806), (76, 285273), (87, 249204), (114, 190182), (116, 186903), (171, 126788), (174, 124602), (228, 95091), (261, 83068), (342, 63394), (348, 62301), (522, 41534), (551, 39348), (684, 31697), (1044, 20767), (1093, 19836), (1102, 19674), (1653, 13116), (2186, 9918), (2204, 9837), (3279, 6612), (3306, 6558), (4372, 4959)]