21020436

素因数分解:

$2^2\times 3^2\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{479}}^1$

素因数の和:565

約数の個数: 72

約数和(自身を含む): 56609280

約数和(自身を除く): 35588844

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 23, 36, 46, 53, 69, 92, 106, 138, 159, 207, 212, 276, 318, 414, 477, 479, 636, 828, 954, 958, 1219, 1437, 1908, 1916, 2438, 2874, 3657, 4311, 4876, 5748, 7314, 8622, 10971, 11017, 14628, 17244, 21942, 22034, 25387, 33051, 43884, 44068, 50774, 66102, 76161, 99153, 101548, 132204, 152322, 198306, 228483, 304644, 396612, 456966, 583901, 913932, 1167802, 1751703, 2335604, 3503406, 5255109, 7006812, 10510218, 21020436]

約数ペア:

[(1, 21020436), (2, 10510218), (3, 7006812), (4, 5255109), (6, 3503406), (9, 2335604), (12, 1751703), (18, 1167802), (23, 913932), (36, 583901), (46, 456966), (53, 396612), (69, 304644), (92, 228483), (106, 198306), (138, 152322), (159, 132204), (207, 101548), (212, 99153), (276, 76161), (318, 66102), (414, 50774), (477, 44068), (479, 43884), (636, 33051), (828, 25387), (954, 22034), (958, 21942), (1219, 17244), (1437, 14628), (1908, 11017), (1916, 10971), (2438, 8622), (2874, 7314), (3657, 5748), (4311, 4876)]