20217508535

素因数分解:

$5^1\times 7^2\times {\mathrm{137}}^1\times {\mathrm{151}}^1\times {\mathrm{3989}}^1$

素因数の和:4296

約数の個数: 48

約数和(自身を含む): 28623430080

約数和(自身を除く): 8405921545

約数列:

[1, 5, 7, 35, 49, 137, 151, 245, 685, 755, 959, 1057, 3989, 4795, 5285, 6713, 7399, 19945, 20687, 27923, 33565, 36995, 103435, 139615, 144809, 195461, 546493, 602339, 724045, 977305, 1013663, 2732465, 3011695, 3825451, 4216373, 5068315, 19127255, 21081865, 26778157, 29514611, 82520443, 133890785, 147573055, 412602215, 577643101, 2888215505, 4043501707, 20217508535]

約数ペア:

[(1, 20217508535), (5, 4043501707), (7, 2888215505), (35, 577643101), (49, 412602215), (137, 147573055), (151, 133890785), (245, 82520443), (685, 29514611), (755, 26778157), (959, 21081865), (1057, 19127255), (3989, 5068315), (4795, 4216373), (5285, 3825451), (6713, 3011695), (7399, 2732465), (19945, 1013663), (20687, 977305), (27923, 724045), (33565, 602339), (36995, 546493), (103435, 195461), (139615, 144809)]