18640764

素因数分解:

$2^2\times 3^2\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{479}}^1$

素因数の和:559

約数の個数: 72

約数和(自身を含む): 50319360

約数和(自身を除く): 31678596

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 23, 36, 46, 47, 69, 92, 94, 138, 141, 188, 207, 276, 282, 414, 423, 479, 564, 828, 846, 958, 1081, 1437, 1692, 1916, 2162, 2874, 3243, 4311, 4324, 5748, 6486, 8622, 9729, 11017, 12972, 17244, 19458, 22034, 22513, 33051, 38916, 44068, 45026, 66102, 67539, 90052, 99153, 132204, 135078, 198306, 202617, 270156, 396612, 405234, 517799, 810468, 1035598, 1553397, 2071196, 3106794, 4660191, 6213588, 9320382, 18640764]

約数ペア:

[(1, 18640764), (2, 9320382), (3, 6213588), (4, 4660191), (6, 3106794), (9, 2071196), (12, 1553397), (18, 1035598), (23, 810468), (36, 517799), (46, 405234), (47, 396612), (69, 270156), (92, 202617), (94, 198306), (138, 135078), (141, 132204), (188, 99153), (207, 90052), (276, 67539), (282, 66102), (414, 45026), (423, 44068), (479, 38916), (564, 33051), (828, 22513), (846, 22034), (958, 19458), (1081, 17244), (1437, 12972), (1692, 11017), (1916, 9729), (2162, 8622), (2874, 6486), (3243, 5748), (4311, 4324)]