20123353240

素因数分解:

$2^3\times 5^1\times {\mathrm{151}}^1\times {\mathrm{1601}}^1\times {\mathrm{2081}}^1$

素因数の和:3844

約数の個数: 64

約数和(自身を含む): 45627779520

約数和(自身を除く): 25504426280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 151, 302, 604, 755, 1208, 1510, 1601, 2081, 3020, 3202, 4162, 6040, 6404, 8005, 8324, 10405, 12808, 16010, 16648, 20810, 32020, 41620, 64040, 83240, 241751, 314231, 483502, 628462, 967004, 1208755, 1256924, 1571155, 1934008, 2417510, 2513848, 3142310, 3331681, 4835020, 6284620, 6663362, 9670040, 12569240, 13326724, 16658405, 26653448, 33316810, 66633620, 133267240, 503083831, 1006167662, 2012335324, 2515419155, 4024670648, 5030838310, 10061676620, 20123353240]

約数ペア:

[(1, 20123353240), (2, 10061676620), (4, 5030838310), (5, 4024670648), (8, 2515419155), (10, 2012335324), (20, 1006167662), (40, 503083831), (151, 133267240), (302, 66633620), (604, 33316810), (755, 26653448), (1208, 16658405), (1510, 13326724), (1601, 12569240), (2081, 9670040), (3020, 6663362), (3202, 6284620), (4162, 4835020), (6040, 3331681), (6404, 3142310), (8005, 2513848), (8324, 2417510), (10405, 1934008), (12808, 1571155), (16010, 1256924), (16648, 1208755), (20810, 967004), (32020, 628462), (41620, 483502), (64040, 314231), (83240, 241751)]