81709180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{281}}^1$

素因数の和:395

約数の個数: 96

約数和(自身を含む): 206180352

約数和(自身を除く): 124471172

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 67, 70, 124, 134, 140, 155, 217, 268, 281, 310, 335, 434, 469, 562, 620, 670, 868, 938, 1085, 1124, 1340, 1405, 1876, 1967, 2077, 2170, 2345, 2810, 3934, 4154, 4340, 4690, 5620, 7868, 8308, 8711, 9380, 9835, 10385, 14539, 17422, 18827, 19670, 20770, 29078, 34844, 37654, 39340, 41540, 43555, 58156, 60977, 72695, 75308, 87110, 94135, 121954, 131789, 145390, 174220, 188270, 243908, 263578, 290780, 304885, 376540, 527156, 583637, 609770, 658945, 1167274, 1219540, 1317890, 2334548, 2635780, 2918185, 4085459, 5836370, 8170918, 11672740, 16341836, 20427295, 40854590, 81709180]

約数ペア:

[(1, 81709180), (2, 40854590), (4, 20427295), (5, 16341836), (7, 11672740), (10, 8170918), (14, 5836370), (20, 4085459), (28, 2918185), (31, 2635780), (35, 2334548), (62, 1317890), (67, 1219540), (70, 1167274), (124, 658945), (134, 609770), (140, 583637), (155, 527156), (217, 376540), (268, 304885), (281, 290780), (310, 263578), (335, 243908), (434, 188270), (469, 174220), (562, 145390), (620, 131789), (670, 121954), (868, 94135), (938, 87110), (1085, 75308), (1124, 72695), (1340, 60977), (1405, 58156), (1876, 43555), (1967, 41540), (2077, 39340), (2170, 37654), (2345, 34844), (2810, 29078), (3934, 20770), (4154, 19670), (4340, 18827), (4690, 17422), (5620, 14539), (7868, 10385), (8308, 9835), (8711, 9380)]