20518530

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{131}}^1\times {\mathrm{227}}^1$

素因数の和:391

約数の個数: 64

約数和(自身を含む): 52005888

約数和(自身を除く): 31487358

約数列:

[1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 131, 138, 227, 230, 262, 345, 393, 454, 655, 681, 690, 786, 1135, 1310, 1362, 1965, 2270, 3013, 3405, 3930, 5221, 6026, 6810, 9039, 10442, 15065, 15663, 18078, 26105, 29737, 30130, 31326, 45195, 52210, 59474, 78315, 89211, 90390, 148685, 156630, 178422, 297370, 446055, 683951, 892110, 1367902, 2051853, 3419755, 4103706, 6839510, 10259265, 20518530]

約数ペア:

[(1, 20518530), (2, 10259265), (3, 6839510), (5, 4103706), (6, 3419755), (10, 2051853), (15, 1367902), (23, 892110), (30, 683951), (46, 446055), (69, 297370), (115, 178422), (131, 156630), (138, 148685), (227, 90390), (230, 89211), (262, 78315), (345, 59474), (393, 52210), (454, 45195), (655, 31326), (681, 30130), (690, 29737), (786, 26105), (1135, 18078), (1310, 15663), (1362, 15065), (1965, 10442), (2270, 9039), (3013, 6810), (3405, 6026), (3930, 5221)]