991278320

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{9749}}^1$

素因数の和:9834

約数の個数: 80

約数和(自身を含む): 2437344000

約数和(自身を除く): 1446065680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 41, 62, 80, 82, 124, 155, 164, 205, 248, 310, 328, 410, 496, 620, 656, 820, 1240, 1271, 1640, 2480, 2542, 3280, 5084, 6355, 9749, 10168, 12710, 19498, 20336, 25420, 38996, 48745, 50840, 77992, 97490, 101680, 155984, 194980, 302219, 389960, 399709, 604438, 779920, 799418, 1208876, 1511095, 1598836, 1998545, 2417752, 3022190, 3197672, 3997090, 4835504, 6044380, 6395344, 7994180, 12088760, 12390979, 15988360, 24177520, 24781958, 31976720, 49563916, 61954895, 99127832, 123909790, 198255664, 247819580, 495639160, 991278320]

約数ペア:

[(1, 991278320), (2, 495639160), (4, 247819580), (5, 198255664), (8, 123909790), (10, 99127832), (16, 61954895), (20, 49563916), (31, 31976720), (40, 24781958), (41, 24177520), (62, 15988360), (80, 12390979), (82, 12088760), (124, 7994180), (155, 6395344), (164, 6044380), (205, 4835504), (248, 3997090), (310, 3197672), (328, 3022190), (410, 2417752), (496, 1998545), (620, 1598836), (656, 1511095), (820, 1208876), (1240, 799418), (1271, 779920), (1640, 604438), (2480, 399709), (2542, 389960), (3280, 302219), (5084, 194980), (6355, 155984), (9749, 101680), (10168, 97490), (12710, 77992), (19498, 50840), (20336, 48745), (25420, 38996)]