19771010

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{157}}^1\times {\mathrm{257}}^1$

素因数の和:435

約数の個数: 48

約数和(自身を含む): 41823864

約数和(自身を除く): 22052854

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 157, 245, 257, 314, 490, 514, 785, 1099, 1285, 1570, 1799, 2198, 2570, 3598, 5495, 7693, 8995, 10990, 12593, 15386, 17990, 25186, 38465, 40349, 62965, 76930, 80698, 125930, 201745, 282443, 403490, 564886, 1412215, 1977101, 2824430, 3954202, 9885505, 19771010]

約数ペア:

[(1, 19771010), (2, 9885505), (5, 3954202), (7, 2824430), (10, 1977101), (14, 1412215), (35, 564886), (49, 403490), (70, 282443), (98, 201745), (157, 125930), (245, 80698), (257, 76930), (314, 62965), (490, 40349), (514, 38465), (785, 25186), (1099, 17990), (1285, 15386), (1570, 12593), (1799, 10990), (2198, 8995), (2570, 7693), (3598, 5495)]