20157641660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{491}}^1\times {\mathrm{157901}}^1$

素因数の和:158414

約数の個数: 48

約数和(自身を含む): 45680416992

約数和(自身を除く): 25522775332

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 491, 982, 1964, 2455, 4910, 6383, 9820, 12766, 25532, 31915, 63830, 127660, 157901, 315802, 631604, 789505, 1579010, 2052713, 3158020, 4105426, 8210852, 10263565, 20527130, 41054260, 77529391, 155058782, 310117564, 387646955, 775293910, 1007882083, 1550587820, 2015764166, 4031528332, 5039410415, 10078820830, 20157641660]

約数ペア:

[(1, 20157641660), (2, 10078820830), (4, 5039410415), (5, 4031528332), (10, 2015764166), (13, 1550587820), (20, 1007882083), (26, 775293910), (52, 387646955), (65, 310117564), (130, 155058782), (260, 77529391), (491, 41054260), (982, 20527130), (1964, 10263565), (2455, 8210852), (4910, 4105426), (6383, 3158020), (9820, 2052713), (12766, 1579010), (25532, 789505), (31915, 631604), (63830, 315802), (127660, 157901)]