209528540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{101}}^2$

素因数の和:303

約数の個数: 72

約数和(自身を含む): 484653120

約数和(自身を除く): 275124580

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 79, 101, 130, 158, 202, 260, 316, 395, 404, 505, 790, 1010, 1027, 1313, 1580, 2020, 2054, 2626, 4108, 5135, 5252, 6565, 7979, 10201, 10270, 13130, 15958, 20402, 20540, 26260, 31916, 39895, 40804, 51005, 79790, 102010, 103727, 132613, 159580, 204020, 207454, 265226, 414908, 518635, 530452, 663065, 805879, 1037270, 1326130, 1611758, 2074540, 2652260, 3223516, 4029395, 8058790, 10476427, 16117580, 20952854, 41905708, 52382135, 104764270, 209528540]

約数ペア:

[(1, 209528540), (2, 104764270), (4, 52382135), (5, 41905708), (10, 20952854), (13, 16117580), (20, 10476427), (26, 8058790), (52, 4029395), (65, 3223516), (79, 2652260), (101, 2074540), (130, 1611758), (158, 1326130), (202, 1037270), (260, 805879), (316, 663065), (395, 530452), (404, 518635), (505, 414908), (790, 265226), (1010, 207454), (1027, 204020), (1313, 159580), (1580, 132613), (2020, 103727), (2054, 102010), (2626, 79790), (4108, 51005), (5135, 40804), (5252, 39895), (6565, 31916), (7979, 26260), (10201, 20540), (10270, 20402), (13130, 15958)]