20171789860

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{149}}^1\times {\mathrm{65719}}^1$

素因数の和:65980

約数の個数: 48

約数和(自身を含む): 43059744000

約数和(自身を除く): 22887954140

約数列:

[1, 2, 4, 5, 10, 20, 103, 149, 206, 298, 412, 515, 596, 745, 1030, 1490, 2060, 2980, 15347, 30694, 61388, 65719, 76735, 131438, 153470, 262876, 306940, 328595, 657190, 1314380, 6769057, 9792131, 13538114, 19584262, 27076228, 33845285, 39168524, 48960655, 67690570, 97921310, 135381140, 195842620, 1008589493, 2017178986, 4034357972, 5042947465, 10085894930, 20171789860]

約数ペア:

[(1, 20171789860), (2, 10085894930), (4, 5042947465), (5, 4034357972), (10, 2017178986), (20, 1008589493), (103, 195842620), (149, 135381140), (206, 97921310), (298, 67690570), (412, 48960655), (515, 39168524), (596, 33845285), (745, 27076228), (1030, 19584262), (1490, 13538114), (2060, 9792131), (2980, 6769057), (15347, 1314380), (30694, 657190), (61388, 328595), (65719, 306940), (76735, 262876), (131438, 153470)]