21660380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{479}}^1$

素因数の和:531

約数の個数: 96

約数和(自身を含む): 58060800

約数和(自身を除く): 36400420

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 19, 20, 28, 34, 35, 38, 68, 70, 76, 85, 95, 119, 133, 140, 170, 190, 238, 266, 323, 340, 380, 476, 479, 532, 595, 646, 665, 958, 1190, 1292, 1330, 1615, 1916, 2261, 2380, 2395, 2660, 3230, 3353, 4522, 4790, 6460, 6706, 8143, 9044, 9101, 9580, 11305, 13412, 16286, 16765, 18202, 22610, 32572, 33530, 36404, 40715, 45220, 45505, 57001, 63707, 67060, 81430, 91010, 114002, 127414, 154717, 162860, 182020, 228004, 254828, 285005, 309434, 318535, 570010, 618868, 637070, 773585, 1083019, 1140020, 1274140, 1547170, 2166038, 3094340, 4332076, 5415095, 10830190, 21660380]

約数ペア:

[(1, 21660380), (2, 10830190), (4, 5415095), (5, 4332076), (7, 3094340), (10, 2166038), (14, 1547170), (17, 1274140), (19, 1140020), (20, 1083019), (28, 773585), (34, 637070), (35, 618868), (38, 570010), (68, 318535), (70, 309434), (76, 285005), (85, 254828), (95, 228004), (119, 182020), (133, 162860), (140, 154717), (170, 127414), (190, 114002), (238, 91010), (266, 81430), (323, 67060), (340, 63707), (380, 57001), (476, 45505), (479, 45220), (532, 40715), (595, 36404), (646, 33530), (665, 32572), (958, 22610), (1190, 18202), (1292, 16765), (1330, 16286), (1615, 13412), (1916, 11305), (2261, 9580), (2380, 9101), (2395, 9044), (2660, 8143), (3230, 6706), (3353, 6460), (4522, 4790)]