12081980

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{563}}^1$

素因数の和:638

約数の個数: 48

約数和(自身を含む): 27004320

約数和(自身を除く): 14922340

約数列:

[1, 2, 4, 5, 10, 20, 29, 37, 58, 74, 116, 145, 148, 185, 290, 370, 563, 580, 740, 1073, 1126, 2146, 2252, 2815, 4292, 5365, 5630, 10730, 11260, 16327, 20831, 21460, 32654, 41662, 65308, 81635, 83324, 104155, 163270, 208310, 326540, 416620, 604099, 1208198, 2416396, 3020495, 6040990, 12081980]

約数ペア:

[(1, 12081980), (2, 6040990), (4, 3020495), (5, 2416396), (10, 1208198), (20, 604099), (29, 416620), (37, 326540), (58, 208310), (74, 163270), (116, 104155), (145, 83324), (148, 81635), (185, 65308), (290, 41662), (370, 32654), (563, 21460), (580, 20831), (740, 16327), (1073, 11260), (1126, 10730), (2146, 5630), (2252, 5365), (2815, 4292)]