1331260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{257}}^1$

素因数の和:310

約数の個数: 48

約数和(自身を含む): 3294144

約数和(自身を除く): 1962884

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 37, 70, 74, 140, 148, 185, 257, 259, 370, 514, 518, 740, 1028, 1036, 1285, 1295, 1799, 2570, 2590, 3598, 5140, 5180, 7196, 8995, 9509, 17990, 19018, 35980, 38036, 47545, 66563, 95090, 133126, 190180, 266252, 332815, 665630, 1331260]

約数ペア:

[(1, 1331260), (2, 665630), (4, 332815), (5, 266252), (7, 190180), (10, 133126), (14, 95090), (20, 66563), (28, 47545), (35, 38036), (37, 35980), (70, 19018), (74, 17990), (140, 9509), (148, 8995), (185, 7196), (257, 5180), (259, 5140), (370, 3598), (514, 2590), (518, 2570), (740, 1799), (1028, 1295), (1036, 1285)]