280804725

素因数分解:

$3^5\times 5^2\times {\mathrm{17}}^1\times {\mathrm{2719}}^1$

素因数の和:2761

約数の個数: 72

約数和(自身を含む): 552464640

約数和(自身を除く): 271659915

約数列:

[1, 3, 5, 9, 15, 17, 25, 27, 45, 51, 75, 81, 85, 135, 153, 225, 243, 255, 405, 425, 459, 675, 765, 1215, 1275, 1377, 2025, 2295, 2719, 3825, 4131, 6075, 6885, 8157, 11475, 13595, 20655, 24471, 34425, 40785, 46223, 67975, 73413, 103275, 122355, 138669, 203925, 220239, 231115, 367065, 416007, 611775, 660717, 693345, 1101195, 1155575, 1248021, 1835325, 2080035, 3303585, 3466725, 3744063, 5505975, 6240105, 10400175, 11232189, 16517925, 18720315, 31200525, 56160945, 93601575, 280804725]

約数ペア:

[(1, 280804725), (3, 93601575), (5, 56160945), (9, 31200525), (15, 18720315), (17, 16517925), (25, 11232189), (27, 10400175), (45, 6240105), (51, 5505975), (75, 3744063), (81, 3466725), (85, 3303585), (135, 2080035), (153, 1835325), (225, 1248021), (243, 1155575), (255, 1101195), (405, 693345), (425, 660717), (459, 611775), (675, 416007), (765, 367065), (1215, 231115), (1275, 220239), (1377, 203925), (2025, 138669), (2295, 122355), (2719, 103275), (3825, 73413), (4131, 67975), (6075, 46223), (6885, 40785), (8157, 34425), (11475, 24471), (13595, 20655)]