305173840

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{109}}^1\times {\mathrm{443}}^1$

素因数の和:644

約数の個数: 80

約数和(自身を含む): 726739200

約数和(自身を除く): 421565360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 109, 158, 218, 316, 395, 436, 443, 545, 632, 790, 872, 886, 1090, 1264, 1580, 1744, 1772, 2180, 2215, 3160, 3544, 4360, 4430, 6320, 7088, 8611, 8720, 8860, 17222, 17720, 34444, 34997, 35440, 43055, 48287, 68888, 69994, 86110, 96574, 137776, 139988, 172220, 174985, 193148, 241435, 279976, 344440, 349970, 386296, 482870, 559952, 688880, 699940, 772592, 965740, 1399880, 1931480, 2799760, 3814673, 3862960, 7629346, 15258692, 19073365, 30517384, 38146730, 61034768, 76293460, 152586920, 305173840]

約数ペア:

[(1, 305173840), (2, 152586920), (4, 76293460), (5, 61034768), (8, 38146730), (10, 30517384), (16, 19073365), (20, 15258692), (40, 7629346), (79, 3862960), (80, 3814673), (109, 2799760), (158, 1931480), (218, 1399880), (316, 965740), (395, 772592), (436, 699940), (443, 688880), (545, 559952), (632, 482870), (790, 386296), (872, 349970), (886, 344440), (1090, 279976), (1264, 241435), (1580, 193148), (1744, 174985), (1772, 172220), (2180, 139988), (2215, 137776), (3160, 96574), (3544, 86110), (4360, 69994), (4430, 68888), (6320, 48287), (7088, 43055), (8611, 35440), (8720, 34997), (8860, 34444), (17222, 17720)]