21017156920

素因数分解:

$2^3\times 5^1\times {\mathrm{241}}^1\times {\mathrm{349}}^1\times {\mathrm{6247}}^1$

素因数の和:6848

約数の個数: 64

約数和(自身を含む): 47628504000

約数和(自身を除く): 26611347080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 241, 349, 482, 698, 964, 1205, 1396, 1745, 1928, 2410, 2792, 3490, 4820, 6247, 6980, 9640, 12494, 13960, 24988, 31235, 49976, 62470, 84109, 124940, 168218, 249880, 336436, 420545, 672872, 841090, 1505527, 1682180, 2180203, 3011054, 3364360, 4360406, 6022108, 7527635, 8720812, 10901015, 12044216, 15055270, 17441624, 21802030, 30110540, 43604060, 60221080, 87208120, 525428923, 1050857846, 2101715692, 2627144615, 4203431384, 5254289230, 10508578460, 21017156920]

約数ペア:

[(1, 21017156920), (2, 10508578460), (4, 5254289230), (5, 4203431384), (8, 2627144615), (10, 2101715692), (20, 1050857846), (40, 525428923), (241, 87208120), (349, 60221080), (482, 43604060), (698, 30110540), (964, 21802030), (1205, 17441624), (1396, 15055270), (1745, 12044216), (1928, 10901015), (2410, 8720812), (2792, 7527635), (3490, 6022108), (4820, 4360406), (6247, 3364360), (6980, 3011054), (9640, 2180203), (12494, 1682180), (13960, 1505527), (24988, 841090), (31235, 672872), (49976, 420545), (62470, 336436), (84109, 249880), (124940, 168218)]