51981405

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{197}}^1\times {\mathrm{359}}^1$

素因数の和:578

約数の個数: 48

約数和(自身を含む): 97511040

約数和(自身を除く): 45529635

約数列:

[1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 197, 245, 359, 591, 735, 985, 1077, 1379, 1795, 2513, 2955, 4137, 5385, 6895, 7539, 9653, 12565, 17591, 20685, 28959, 37695, 48265, 52773, 70723, 87955, 144795, 212169, 263865, 353615, 495061, 1060845, 1485183, 2475305, 3465427, 7425915, 10396281, 17327135, 51981405]

約数ペア:

[(1, 51981405), (3, 17327135), (5, 10396281), (7, 7425915), (15, 3465427), (21, 2475305), (35, 1485183), (49, 1060845), (105, 495061), (147, 353615), (197, 263865), (245, 212169), (359, 144795), (591, 87955), (735, 70723), (985, 52773), (1077, 48265), (1379, 37695), (1795, 28959), (2513, 20685), (2955, 17591), (4137, 12565), (5385, 9653), (6895, 7539)]