20042235

素因数分解:

$3^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1$

素因数の和:146

約数の個数: 80

約数和(自身を含む): 39517632

約数和(自身を除く): 19475397

約数列:

[1, 3, 5, 9, 15, 17, 27, 41, 45, 51, 71, 81, 85, 123, 135, 153, 205, 213, 255, 355, 369, 405, 459, 615, 639, 697, 765, 1065, 1107, 1207, 1377, 1845, 1917, 2091, 2295, 2911, 3195, 3321, 3485, 3621, 5535, 5751, 6035, 6273, 6885, 8733, 9585, 10455, 10863, 14555, 16605, 18105, 18819, 26199, 28755, 31365, 32589, 43665, 49487, 54315, 56457, 78597, 94095, 97767, 130995, 148461, 162945, 235791, 247435, 282285, 392985, 445383, 488835, 742305, 1178955, 1336149, 2226915, 4008447, 6680745, 20042235]

約数ペア:

[(1, 20042235), (3, 6680745), (5, 4008447), (9, 2226915), (15, 1336149), (17, 1178955), (27, 742305), (41, 488835), (45, 445383), (51, 392985), (71, 282285), (81, 247435), (85, 235791), (123, 162945), (135, 148461), (153, 130995), (205, 97767), (213, 94095), (255, 78597), (355, 56457), (369, 54315), (405, 49487), (459, 43665), (615, 32589), (639, 31365), (697, 28755), (765, 26199), (1065, 18819), (1107, 18105), (1207, 16605), (1377, 14555), (1845, 10863), (1917, 10455), (2091, 9585), (2295, 8733), (2911, 6885), (3195, 6273), (3321, 6035), (3485, 5751), (3621, 5535)]