21498208060

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{1187}}^1\times {\mathrm{18481}}^1$

素因数の和:19691

約数の個数: 72

約数和(自身を含む): 52564138704

約数和(自身を除く): 31065930644

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 1187, 2374, 4748, 5935, 8309, 11870, 16618, 18481, 23740, 33236, 36962, 41545, 58163, 73924, 83090, 92405, 116326, 129367, 166180, 184810, 232652, 258734, 290815, 369620, 517468, 581630, 646835, 905569, 1163260, 1293670, 1811138, 2587340, 3622276, 4527845, 9055690, 18111380, 21936947, 43873894, 87747788, 109684735, 153558629, 219369470, 307117258, 438738940, 614234516, 767793145, 1074910403, 1535586290, 2149820806, 3071172580, 4299641612, 5374552015, 10749104030, 21498208060]

約数ペア:

[(1, 21498208060), (2, 10749104030), (4, 5374552015), (5, 4299641612), (7, 3071172580), (10, 2149820806), (14, 1535586290), (20, 1074910403), (28, 767793145), (35, 614234516), (49, 438738940), (70, 307117258), (98, 219369470), (140, 153558629), (196, 109684735), (245, 87747788), (490, 43873894), (980, 21936947), (1187, 18111380), (2374, 9055690), (4748, 4527845), (5935, 3622276), (8309, 2587340), (11870, 1811138), (16618, 1293670), (18481, 1163260), (23740, 905569), (33236, 646835), (36962, 581630), (41545, 517468), (58163, 369620), (73924, 290815), (83090, 258734), (92405, 232652), (116326, 184810), (129367, 166180)]