20983662

素因数分解:

$2^1\times 3^2\times 7^2\times {\mathrm{37}}^1\times {\mathrm{643}}^1$

素因数の和:702

約数の個数: 72

約数和(自身を含む): 54401256

約数和(自身を除く): 33417594

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 37, 42, 49, 63, 74, 98, 111, 126, 147, 222, 259, 294, 333, 441, 518, 643, 666, 777, 882, 1286, 1554, 1813, 1929, 2331, 3626, 3858, 4501, 4662, 5439, 5787, 9002, 10878, 11574, 13503, 16317, 23791, 27006, 31507, 32634, 40509, 47582, 63014, 71373, 81018, 94521, 142746, 166537, 189042, 214119, 283563, 333074, 428238, 499611, 567126, 999222, 1165759, 1498833, 2331518, 2997666, 3497277, 6994554, 10491831, 20983662]

約数ペア:

[(1, 20983662), (2, 10491831), (3, 6994554), (6, 3497277), (7, 2997666), (9, 2331518), (14, 1498833), (18, 1165759), (21, 999222), (37, 567126), (42, 499611), (49, 428238), (63, 333074), (74, 283563), (98, 214119), (111, 189042), (126, 166537), (147, 142746), (222, 94521), (259, 81018), (294, 71373), (333, 63014), (441, 47582), (518, 40509), (643, 32634), (666, 31507), (777, 27006), (882, 23791), (1286, 16317), (1554, 13503), (1813, 11574), (1929, 10878), (2331, 9002), (3626, 5787), (3858, 5439), (4501, 4662)]