128403891

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1$

素因数の和:237

約数の個数: 96

約数和(自身を含む): 246005760

約数和(自身を除く): 117601869

約数列:

[1, 3, 7, 9, 11, 21, 31, 33, 43, 63, 77, 93, 99, 129, 139, 217, 231, 279, 301, 341, 387, 417, 473, 651, 693, 903, 973, 1023, 1251, 1333, 1419, 1529, 1953, 2387, 2709, 2919, 3069, 3311, 3999, 4257, 4309, 4587, 5977, 7161, 8757, 9331, 9933, 10703, 11997, 12927, 13761, 14663, 17931, 21483, 27993, 29799, 30163, 32109, 38781, 41839, 43989, 47399, 53793, 65747, 83979, 90489, 96327, 102641, 125517, 131967, 142197, 185287, 197241, 271467, 307923, 331793, 376551, 426591, 460229, 555861, 591723, 923769, 995379, 1297009, 1380687, 1667583, 2038157, 2986137, 3891027, 4142061, 6114471, 11673081, 14267099, 18343413, 42801297, 128403891]

約数ペア:

[(1, 128403891), (3, 42801297), (7, 18343413), (9, 14267099), (11, 11673081), (21, 6114471), (31, 4142061), (33, 3891027), (43, 2986137), (63, 2038157), (77, 1667583), (93, 1380687), (99, 1297009), (129, 995379), (139, 923769), (217, 591723), (231, 555861), (279, 460229), (301, 426591), (341, 376551), (387, 331793), (417, 307923), (473, 271467), (651, 197241), (693, 185287), (903, 142197), (973, 131967), (1023, 125517), (1251, 102641), (1333, 96327), (1419, 90489), (1529, 83979), (1953, 65747), (2387, 53793), (2709, 47399), (2919, 43989), (3069, 41839), (3311, 38781), (3999, 32109), (4257, 30163), (4309, 29799), (4587, 27993), (5977, 21483), (7161, 17931), (8757, 14663), (9331, 13761), (9933, 12927), (10703, 11997)]