20421165

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{1511}}^1$

素因数の和:1589

約数の個数: 32

約数和(自身を含む): 35271936

約数和(自身を除く): 14850771

約数列:

[1, 3, 5, 15, 17, 51, 53, 85, 159, 255, 265, 795, 901, 1511, 2703, 4505, 4533, 7555, 13515, 22665, 25687, 77061, 80083, 128435, 240249, 385305, 400415, 1201245, 1361411, 4084233, 6807055, 20421165]

約数ペア:

[(1, 20421165), (3, 6807055), (5, 4084233), (15, 1361411), (17, 1201245), (51, 400415), (53, 385305), (85, 240249), (159, 128435), (255, 80083), (265, 77061), (795, 25687), (901, 22665), (1511, 13515), (2703, 7555), (4505, 4533)]