31920640

素因数分解:

$2^9\times 5^1\times {\mathrm{37}}^1\times {\mathrm{337}}^1$

素因数の和:397

約数の個数: 80

約数和(自身を含む): 78836472

約数和(自身を除く): 46915832

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 64, 74, 80, 128, 148, 160, 185, 256, 296, 320, 337, 370, 512, 592, 640, 674, 740, 1184, 1280, 1348, 1480, 1685, 2368, 2560, 2696, 2960, 3370, 4736, 5392, 5920, 6740, 9472, 10784, 11840, 12469, 13480, 18944, 21568, 23680, 24938, 26960, 43136, 47360, 49876, 53920, 62345, 86272, 94720, 99752, 107840, 124690, 172544, 199504, 215680, 249380, 399008, 431360, 498760, 798016, 862720, 997520, 1596032, 1995040, 3192064, 3990080, 6384128, 7980160, 15960320, 31920640]

約数ペア:

[(1, 31920640), (2, 15960320), (4, 7980160), (5, 6384128), (8, 3990080), (10, 3192064), (16, 1995040), (20, 1596032), (32, 997520), (37, 862720), (40, 798016), (64, 498760), (74, 431360), (80, 399008), (128, 249380), (148, 215680), (160, 199504), (185, 172544), (256, 124690), (296, 107840), (320, 99752), (337, 94720), (370, 86272), (512, 62345), (592, 53920), (640, 49876), (674, 47360), (740, 43136), (1184, 26960), (1280, 24938), (1348, 23680), (1480, 21568), (1685, 18944), (2368, 13480), (2560, 12469), (2696, 11840), (2960, 10784), (3370, 9472), (4736, 6740), (5392, 5920)]