20345175

素因数分解:

$3^5\times 5^2\times {\mathrm{17}}^1\times {\mathrm{197}}^1$

素因数の和:239

約数の個数: 72

約数和(自身を含む): 40216176

約数和(自身を除く): 19871001

約数列:

[1, 3, 5, 9, 15, 17, 25, 27, 45, 51, 75, 81, 85, 135, 153, 197, 225, 243, 255, 405, 425, 459, 591, 675, 765, 985, 1215, 1275, 1377, 1773, 2025, 2295, 2955, 3349, 3825, 4131, 4925, 5319, 6075, 6885, 8865, 10047, 11475, 14775, 15957, 16745, 20655, 26595, 30141, 34425, 44325, 47871, 50235, 79785, 83725, 90423, 103275, 132975, 150705, 239355, 251175, 271269, 398925, 452115, 753525, 813807, 1196775, 1356345, 2260575, 4069035, 6781725, 20345175]

約数ペア:

[(1, 20345175), (3, 6781725), (5, 4069035), (9, 2260575), (15, 1356345), (17, 1196775), (25, 813807), (27, 753525), (45, 452115), (51, 398925), (75, 271269), (81, 251175), (85, 239355), (135, 150705), (153, 132975), (197, 103275), (225, 90423), (243, 83725), (255, 79785), (405, 50235), (425, 47871), (459, 44325), (591, 34425), (675, 30141), (765, 26595), (985, 20655), (1215, 16745), (1275, 15957), (1377, 14775), (1773, 11475), (2025, 10047), (2295, 8865), (2955, 6885), (3349, 6075), (3825, 5319), (4131, 4925)]