20221551

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{239}}^1$

素因数の和:348

約数の個数: 48

約数和(自身を含む): 35942400

約数和(自身を除く): 15720849

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 79, 119, 153, 237, 239, 357, 553, 711, 717, 1071, 1343, 1659, 1673, 2151, 4029, 4063, 4977, 5019, 9401, 12087, 12189, 15057, 18881, 28203, 28441, 36567, 56643, 84609, 85323, 132167, 169929, 255969, 320977, 396501, 962931, 1189503, 2246839, 2888793, 6740517, 20221551]

約数ペア:

[(1, 20221551), (3, 6740517), (7, 2888793), (9, 2246839), (17, 1189503), (21, 962931), (51, 396501), (63, 320977), (79, 255969), (119, 169929), (153, 132167), (237, 85323), (239, 84609), (357, 56643), (553, 36567), (711, 28441), (717, 28203), (1071, 18881), (1343, 15057), (1659, 12189), (1673, 12087), (2151, 9401), (4029, 5019), (4063, 4977)]