20881013096

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{269}}^1\times {\mathrm{8039}}^1$

素因数の和:8402

約数の個数: 64

約数和(自身を含む): 42200352000

約数和(自身を除く): 21319338904

約数列:

[1, 2, 4, 8, 17, 34, 68, 71, 136, 142, 269, 284, 538, 568, 1076, 1207, 2152, 2414, 4573, 4828, 8039, 9146, 9656, 16078, 18292, 19099, 32156, 36584, 38198, 64312, 76396, 136663, 152792, 273326, 324683, 546652, 570769, 649366, 1093304, 1141538, 1298732, 2162491, 2283076, 2597464, 4324982, 4566152, 8649964, 9703073, 17299928, 19406146, 36762347, 38812292, 73524694, 77624584, 147049388, 153536861, 294098776, 307073722, 614147444, 1228294888, 2610126637, 5220253274, 10440506548, 20881013096]

約数ペア:

[(1, 20881013096), (2, 10440506548), (4, 5220253274), (8, 2610126637), (17, 1228294888), (34, 614147444), (68, 307073722), (71, 294098776), (136, 153536861), (142, 147049388), (269, 77624584), (284, 73524694), (538, 38812292), (568, 36762347), (1076, 19406146), (1207, 17299928), (2152, 9703073), (2414, 8649964), (4573, 4566152), (4828, 4324982), (8039, 2597464), (9146, 2283076), (9656, 2162491), (16078, 1298732), (18292, 1141538), (19099, 1093304), (32156, 649366), (36584, 570769), (38198, 546652), (64312, 324683), (76396, 273326), (136663, 152792)]