64220120

素因数分解:

$2^3\times 5^1\times {\mathrm{137}}^1\times {\mathrm{11719}}^1$

素因数の和:11867

約数の個数: 32

約数和(自身を含む): 145562400

約数和(自身を除く): 81342280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 137, 274, 548, 685, 1096, 1370, 2740, 5480, 11719, 23438, 46876, 58595, 93752, 117190, 234380, 468760, 1605503, 3211006, 6422012, 8027515, 12844024, 16055030, 32110060, 64220120]

約数ペア:

[(1, 64220120), (2, 32110060), (4, 16055030), (5, 12844024), (8, 8027515), (10, 6422012), (20, 3211006), (40, 1605503), (137, 468760), (274, 234380), (548, 117190), (685, 93752), (1096, 58595), (1370, 46876), (2740, 23438), (5480, 11719)]