20356623

素因数分解:

$3^3\times 7^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1$

素因数の和:165

約数の個数: 64

約数和(自身を含む): 36771840

約数和(自身を除く): 16415217

約数列:

[1, 3, 7, 9, 21, 27, 37, 41, 63, 71, 111, 123, 189, 213, 259, 287, 333, 369, 497, 639, 777, 861, 999, 1107, 1491, 1517, 1917, 2331, 2583, 2627, 2911, 4473, 4551, 6993, 7749, 7881, 8733, 10619, 13419, 13653, 18389, 20377, 23643, 26199, 31857, 40959, 55167, 61131, 70929, 78597, 95571, 107707, 165501, 183393, 286713, 323121, 496503, 550179, 753949, 969363, 2261847, 2908089, 6785541, 20356623]

約数ペア:

[(1, 20356623), (3, 6785541), (7, 2908089), (9, 2261847), (21, 969363), (27, 753949), (37, 550179), (41, 496503), (63, 323121), (71, 286713), (111, 183393), (123, 165501), (189, 107707), (213, 95571), (259, 78597), (287, 70929), (333, 61131), (369, 55167), (497, 40959), (639, 31857), (777, 26199), (861, 23643), (999, 20377), (1107, 18389), (1491, 13653), (1517, 13419), (1917, 10619), (2331, 8733), (2583, 7881), (2627, 7749), (2911, 6993), (4473, 4551)]