311940780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{137}}^2\times {\mathrm{277}}^1$

素因数の和:563

約数の個数: 72

約数和(自身を含む): 883032528

約数和(自身を除く): 571091748

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 137, 274, 277, 411, 548, 554, 685, 822, 831, 1108, 1370, 1385, 1644, 1662, 2055, 2740, 2770, 3324, 4110, 4155, 5540, 8220, 8310, 16620, 18769, 37538, 37949, 56307, 75076, 75898, 93845, 112614, 113847, 151796, 187690, 189745, 225228, 227694, 281535, 375380, 379490, 455388, 563070, 569235, 758980, 1126140, 1138470, 2276940, 5199013, 10398026, 15597039, 20796052, 25995065, 31194078, 51990130, 62388156, 77985195, 103980260, 155970390, 311940780]

約数ペア:

[(1, 311940780), (2, 155970390), (3, 103980260), (4, 77985195), (5, 62388156), (6, 51990130), (10, 31194078), (12, 25995065), (15, 20796052), (20, 15597039), (30, 10398026), (60, 5199013), (137, 2276940), (274, 1138470), (277, 1126140), (411, 758980), (548, 569235), (554, 563070), (685, 455388), (822, 379490), (831, 375380), (1108, 281535), (1370, 227694), (1385, 225228), (1644, 189745), (1662, 187690), (2055, 151796), (2740, 113847), (2770, 112614), (3324, 93845), (4110, 75898), (4155, 75076), (5540, 56307), (8220, 37949), (8310, 37538), (16620, 18769)]