20458020

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{223}}^1$

素因数の和:385

約数の個数: 96

約数和(自身を含む): 63221760

約数和(自身を除く): 42763740

約数列:

[1, 2, 3, 4, 5, 6, 10, 11, 12, 15, 20, 22, 30, 33, 44, 55, 60, 66, 110, 132, 139, 165, 220, 223, 278, 330, 417, 446, 556, 660, 669, 695, 834, 892, 1115, 1338, 1390, 1529, 1668, 2085, 2230, 2453, 2676, 2780, 3058, 3345, 4170, 4460, 4587, 4906, 6116, 6690, 7359, 7645, 8340, 9174, 9812, 12265, 13380, 14718, 15290, 18348, 22935, 24530, 29436, 30580, 30997, 36795, 45870, 49060, 61994, 73590, 91740, 92991, 123988, 147180, 154985, 185982, 309970, 340967, 371964, 464955, 619940, 681934, 929910, 1022901, 1363868, 1704835, 1859820, 2045802, 3409670, 4091604, 5114505, 6819340, 10229010, 20458020]

約数ペア:

[(1, 20458020), (2, 10229010), (3, 6819340), (4, 5114505), (5, 4091604), (6, 3409670), (10, 2045802), (11, 1859820), (12, 1704835), (15, 1363868), (20, 1022901), (22, 929910), (30, 681934), (33, 619940), (44, 464955), (55, 371964), (60, 340967), (66, 309970), (110, 185982), (132, 154985), (139, 147180), (165, 123988), (220, 92991), (223, 91740), (278, 73590), (330, 61994), (417, 49060), (446, 45870), (556, 36795), (660, 30997), (669, 30580), (695, 29436), (834, 24530), (892, 22935), (1115, 18348), (1338, 15290), (1390, 14718), (1529, 13380), (1668, 12265), (2085, 9812), (2230, 9174), (2453, 8340), (2676, 7645), (2780, 7359), (3058, 6690), (3345, 6116), (4170, 4906), (4460, 4587)]