20391637240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{349}}^1\times {\mathrm{112363}}^1$

素因数の和:112736

約数の個数: 64

約数和(自身を含む): 49552524000

約数和(自身を除く): 29160886760

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 349, 520, 698, 1396, 1745, 2792, 3490, 4537, 6980, 9074, 13960, 18148, 22685, 36296, 45370, 90740, 112363, 181480, 224726, 449452, 561815, 898904, 1123630, 1460719, 2247260, 2921438, 4494520, 5842876, 7303595, 11685752, 14607190, 29214380, 39214687, 58428760, 78429374, 156858748, 196073435, 313717496, 392146870, 509790931, 784293740, 1019581862, 1568587480, 2039163724, 2548954655, 4078327448, 5097909310, 10195818620, 20391637240]

約数ペア:

[(1, 20391637240), (2, 10195818620), (4, 5097909310), (5, 4078327448), (8, 2548954655), (10, 2039163724), (13, 1568587480), (20, 1019581862), (26, 784293740), (40, 509790931), (52, 392146870), (65, 313717496), (104, 196073435), (130, 156858748), (260, 78429374), (349, 58428760), (520, 39214687), (698, 29214380), (1396, 14607190), (1745, 11685752), (2792, 7303595), (3490, 5842876), (4537, 4494520), (6980, 2921438), (9074, 2247260), (13960, 1460719), (18148, 1123630), (22685, 898904), (36296, 561815), (45370, 449452), (90740, 224726), (112363, 181480)]