19800040

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{29}}^1\times {\mathrm{101}}^1$

素因数の和:167

約数の個数: 96

約数和(自身を含む): 50398200

約数和(自身を除く): 30598160

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 29, 40, 52, 58, 65, 101, 104, 116, 130, 145, 169, 202, 232, 260, 290, 338, 377, 404, 505, 520, 580, 676, 754, 808, 845, 1010, 1160, 1313, 1352, 1508, 1690, 1885, 2020, 2626, 2929, 3016, 3380, 3770, 4040, 4901, 5252, 5858, 6565, 6760, 7540, 9802, 10504, 11716, 13130, 14645, 15080, 17069, 19604, 23432, 24505, 26260, 29290, 34138, 38077, 39208, 49010, 52520, 58580, 68276, 76154, 85345, 98020, 117160, 136552, 152308, 170690, 190385, 196040, 304616, 341380, 380770, 495001, 682760, 761540, 990002, 1523080, 1980004, 2475005, 3960008, 4950010, 9900020, 19800040]

約数ペア:

[(1, 19800040), (2, 9900020), (4, 4950010), (5, 3960008), (8, 2475005), (10, 1980004), (13, 1523080), (20, 990002), (26, 761540), (29, 682760), (40, 495001), (52, 380770), (58, 341380), (65, 304616), (101, 196040), (104, 190385), (116, 170690), (130, 152308), (145, 136552), (169, 117160), (202, 98020), (232, 85345), (260, 76154), (290, 68276), (338, 58580), (377, 52520), (404, 49010), (505, 39208), (520, 38077), (580, 34138), (676, 29290), (754, 26260), (808, 24505), (845, 23432), (1010, 19604), (1160, 17069), (1313, 15080), (1352, 14645), (1508, 13130), (1690, 11716), (1885, 10504), (2020, 9802), (2626, 7540), (2929, 6760), (3016, 6565), (3380, 5858), (3770, 5252), (4040, 4901)]