68960680

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{139}}^1\times {\mathrm{157}}^1$

素因数の和:386

約数の個数: 64

約数和(自身を含む): 159264000

約数和(自身を除く): 90303320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 139, 157, 158, 278, 314, 316, 395, 556, 628, 632, 695, 785, 790, 1112, 1256, 1390, 1570, 1580, 2780, 3140, 3160, 5560, 6280, 10981, 12403, 21823, 21962, 24806, 43646, 43924, 49612, 54905, 62015, 87292, 87848, 99224, 109115, 109810, 124030, 174584, 218230, 219620, 248060, 436460, 439240, 496120, 872920, 1724017, 3448034, 6896068, 8620085, 13792136, 17240170, 34480340, 68960680]

約数ペア:

[(1, 68960680), (2, 34480340), (4, 17240170), (5, 13792136), (8, 8620085), (10, 6896068), (20, 3448034), (40, 1724017), (79, 872920), (139, 496120), (157, 439240), (158, 436460), (278, 248060), (314, 219620), (316, 218230), (395, 174584), (556, 124030), (628, 109810), (632, 109115), (695, 99224), (785, 87848), (790, 87292), (1112, 62015), (1256, 54905), (1390, 49612), (1570, 43924), (1580, 43646), (2780, 24806), (3140, 21962), (3160, 21823), (5560, 12403), (6280, 10981)]