8321840

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{211}}^1$

素因数の和:270

約数の個数: 80

約数和(自身を含む): 21293280

約数和(自身を除く): 12971440

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 29, 34, 40, 58, 68, 80, 85, 116, 136, 145, 170, 211, 232, 272, 290, 340, 422, 464, 493, 580, 680, 844, 986, 1055, 1160, 1360, 1688, 1972, 2110, 2320, 2465, 3376, 3587, 3944, 4220, 4930, 6119, 7174, 7888, 8440, 9860, 12238, 14348, 16880, 17935, 19720, 24476, 28696, 30595, 35870, 39440, 48952, 57392, 61190, 71740, 97904, 104023, 122380, 143480, 208046, 244760, 286960, 416092, 489520, 520115, 832184, 1040230, 1664368, 2080460, 4160920, 8321840]

約数ペア:

[(1, 8321840), (2, 4160920), (4, 2080460), (5, 1664368), (8, 1040230), (10, 832184), (16, 520115), (17, 489520), (20, 416092), (29, 286960), (34, 244760), (40, 208046), (58, 143480), (68, 122380), (80, 104023), (85, 97904), (116, 71740), (136, 61190), (145, 57392), (170, 48952), (211, 39440), (232, 35870), (272, 30595), (290, 28696), (340, 24476), (422, 19720), (464, 17935), (493, 16880), (580, 14348), (680, 12238), (844, 9860), (986, 8440), (1055, 7888), (1160, 7174), (1360, 6119), (1688, 4930), (1972, 4220), (2110, 3944), (2320, 3587), (2465, 3376)]