21673827

素因数分解:

$3^2\times 7^4\times {\mathrm{17}}^1\times {\mathrm{59}}^1$

素因数の和:110

約数の個数: 60

約数和(自身を含む): 39326040

約数和(自身を除く): 17652213

約数列:

[1, 3, 7, 9, 17, 21, 49, 51, 59, 63, 119, 147, 153, 177, 343, 357, 413, 441, 531, 833, 1003, 1029, 1071, 1239, 2401, 2499, 2891, 3009, 3087, 3717, 5831, 7021, 7203, 7497, 8673, 9027, 17493, 20237, 21063, 21609, 26019, 40817, 49147, 52479, 60711, 63189, 122451, 141659, 147441, 182133, 344029, 367353, 424977, 442323, 1032087, 1274931, 2408203, 3096261, 7224609, 21673827]

約数ペア:

[(1, 21673827), (3, 7224609), (7, 3096261), (9, 2408203), (17, 1274931), (21, 1032087), (49, 442323), (51, 424977), (59, 367353), (63, 344029), (119, 182133), (147, 147441), (153, 141659), (177, 122451), (343, 63189), (357, 60711), (413, 52479), (441, 49147), (531, 40817), (833, 26019), (1003, 21609), (1029, 21063), (1071, 20237), (1239, 17493), (2401, 9027), (2499, 8673), (2891, 7497), (3009, 7203), (3087, 7021), (3717, 5831)]