20719804

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1$

素因数の和:155

約数の個数: 96

約数和(自身を含む): 48384000

約数和(自身を除く): 27664196

約数列:

[1, 2, 4, 7, 14, 17, 19, 28, 29, 34, 38, 58, 68, 76, 79, 116, 119, 133, 158, 203, 238, 266, 316, 323, 406, 476, 493, 532, 551, 553, 646, 812, 986, 1102, 1106, 1292, 1343, 1501, 1972, 2204, 2212, 2261, 2291, 2686, 3002, 3451, 3857, 4522, 4582, 5372, 6004, 6902, 7714, 9044, 9164, 9367, 9401, 10507, 13804, 15428, 16037, 18734, 18802, 21014, 25517, 32074, 37468, 37604, 38947, 42028, 43529, 51034, 64148, 65569, 77894, 87058, 102068, 131138, 155788, 174116, 178619, 262276, 272629, 304703, 357238, 545258, 609406, 714476, 739993, 1090516, 1218812, 1479986, 2959972, 5179951, 10359902, 20719804]

約数ペア:

[(1, 20719804), (2, 10359902), (4, 5179951), (7, 2959972), (14, 1479986), (17, 1218812), (19, 1090516), (28, 739993), (29, 714476), (34, 609406), (38, 545258), (58, 357238), (68, 304703), (76, 272629), (79, 262276), (116, 178619), (119, 174116), (133, 155788), (158, 131138), (203, 102068), (238, 87058), (266, 77894), (316, 65569), (323, 64148), (406, 51034), (476, 43529), (493, 42028), (532, 38947), (551, 37604), (553, 37468), (646, 32074), (812, 25517), (986, 21014), (1102, 18802), (1106, 18734), (1292, 16037), (1343, 15428), (1501, 13804), (1972, 10507), (2204, 9401), (2212, 9367), (2261, 9164), (2291, 9044), (2686, 7714), (3002, 6902), (3451, 6004), (3857, 5372), (4522, 4582)]