161720769

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{83}}^1$

素因数の和:238

約数の個数: 64

約数和(自身を含む): 267337728

約数和(自身を除く): 105616959

約数列:

[1, 3, 7, 21, 31, 41, 73, 83, 93, 123, 217, 219, 249, 287, 511, 581, 651, 861, 1271, 1533, 1743, 2263, 2573, 2993, 3403, 3813, 6059, 6789, 7719, 8897, 8979, 10209, 15841, 18011, 18177, 20951, 23821, 26691, 42413, 47523, 54033, 62853, 71463, 92783, 105493, 127239, 187829, 248419, 278349, 316479, 563487, 649481, 738451, 745257, 1314803, 1738933, 1948443, 2215353, 3944409, 5216799, 7700989, 23102967, 53906923, 161720769]

約数ペア:

[(1, 161720769), (3, 53906923), (7, 23102967), (21, 7700989), (31, 5216799), (41, 3944409), (73, 2215353), (83, 1948443), (93, 1738933), (123, 1314803), (217, 745257), (219, 738451), (249, 649481), (287, 563487), (511, 316479), (581, 278349), (651, 248419), (861, 187829), (1271, 127239), (1533, 105493), (1743, 92783), (2263, 71463), (2573, 62853), (2993, 54033), (3403, 47523), (3813, 42413), (6059, 26691), (6789, 23821), (7719, 20951), (8897, 18177), (8979, 18011), (10209, 15841)]