20431386

素因数分解:

$2^1\times 3^3\times {\mathrm{71}}^1\times {\mathrm{73}}^2$

素因数の和:228

約数の個数: 48

約数和(自身を含む): 46681920

約数和(自身を除く): 26250534

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 71, 73, 142, 146, 213, 219, 426, 438, 639, 657, 1278, 1314, 1917, 1971, 3834, 3942, 5183, 5329, 10366, 10658, 15549, 15987, 31098, 31974, 46647, 47961, 93294, 95922, 139941, 143883, 279882, 287766, 378359, 756718, 1135077, 2270154, 3405231, 6810462, 10215693, 20431386]

約数ペア:

[(1, 20431386), (2, 10215693), (3, 6810462), (6, 3405231), (9, 2270154), (18, 1135077), (27, 756718), (54, 378359), (71, 287766), (73, 279882), (142, 143883), (146, 139941), (213, 95922), (219, 93294), (426, 47961), (438, 46647), (639, 31974), (657, 31098), (1278, 15987), (1314, 15549), (1917, 10658), (1971, 10366), (3834, 5329), (3942, 5183)]