20472400

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1$

素因数の和:189

約数の個数: 120

約数和(自身を含む): 55107584

約数和(自身を除く): 34635184

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 31, 40, 50, 52, 62, 65, 80, 100, 104, 124, 127, 130, 155, 200, 208, 248, 254, 260, 310, 325, 400, 403, 496, 508, 520, 620, 635, 650, 775, 806, 1016, 1040, 1240, 1270, 1300, 1550, 1612, 1651, 2015, 2032, 2480, 2540, 2600, 3100, 3175, 3224, 3302, 3937, 4030, 5080, 5200, 6200, 6350, 6448, 6604, 7874, 8060, 8255, 10075, 10160, 12400, 12700, 13208, 15748, 16120, 16510, 19685, 20150, 25400, 26416, 31496, 32240, 33020, 39370, 40300, 41275, 50800, 51181, 62992, 66040, 78740, 80600, 82550, 98425, 102362, 132080, 157480, 161200, 165100, 196850, 204724, 255905, 314960, 330200, 393700, 409448, 511810, 660400, 787400, 818896, 1023620, 1279525, 1574800, 2047240, 2559050, 4094480, 5118100, 10236200, 20472400]

約数ペア:

[(1, 20472400), (2, 10236200), (4, 5118100), (5, 4094480), (8, 2559050), (10, 2047240), (13, 1574800), (16, 1279525), (20, 1023620), (25, 818896), (26, 787400), (31, 660400), (40, 511810), (50, 409448), (52, 393700), (62, 330200), (65, 314960), (80, 255905), (100, 204724), (104, 196850), (124, 165100), (127, 161200), (130, 157480), (155, 132080), (200, 102362), (208, 98425), (248, 82550), (254, 80600), (260, 78740), (310, 66040), (325, 62992), (400, 51181), (403, 50800), (496, 41275), (508, 40300), (520, 39370), (620, 33020), (635, 32240), (650, 31496), (775, 26416), (806, 25400), (1016, 20150), (1040, 19685), (1240, 16510), (1270, 16120), (1300, 15748), (1550, 13208), (1612, 12700), (1651, 12400), (2015, 10160), (2032, 10075), (2480, 8255), (2540, 8060), (2600, 7874), (3100, 6604), (3175, 6448), (3224, 6350), (3302, 6200), (3937, 5200), (4030, 5080)]