85180120

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{337}}^1$

素因数の和:508

約数の個数: 64

約数和(自身を含む): 197121600

約数和(自身を除く): 111941480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 89, 142, 178, 284, 337, 355, 356, 445, 568, 674, 710, 712, 890, 1348, 1420, 1685, 1780, 2696, 2840, 3370, 3560, 6319, 6740, 12638, 13480, 23927, 25276, 29993, 31595, 47854, 50552, 59986, 63190, 95708, 119635, 119972, 126380, 149965, 191416, 239270, 239944, 252760, 299930, 478540, 599860, 957080, 1199720, 2129503, 4259006, 8518012, 10647515, 17036024, 21295030, 42590060, 85180120]

約数ペア:

[(1, 85180120), (2, 42590060), (4, 21295030), (5, 17036024), (8, 10647515), (10, 8518012), (20, 4259006), (40, 2129503), (71, 1199720), (89, 957080), (142, 599860), (178, 478540), (284, 299930), (337, 252760), (355, 239944), (356, 239270), (445, 191416), (568, 149965), (674, 126380), (710, 119972), (712, 119635), (890, 95708), (1348, 63190), (1420, 59986), (1685, 50552), (1780, 47854), (2696, 31595), (2840, 29993), (3370, 25276), (3560, 23927), (6319, 13480), (6740, 12638)]