20398336640

素因数分解:

$2^7\times 5^1\times {\mathrm{11}}^1\times {\mathrm{2897491}}^1$

素因数の和:2897521

約数の個数: 64

約数和(自身を含む): 53197953120

約数和(自身を除く): 32799616480

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 110, 128, 160, 176, 220, 320, 352, 440, 640, 704, 880, 1408, 1760, 3520, 7040, 2897491, 5794982, 11589964, 14487455, 23179928, 28974910, 31872401, 46359856, 57949820, 63744802, 92719712, 115899640, 127489604, 159362005, 185439424, 231799280, 254979208, 318724010, 370878848, 463598560, 509958416, 637448020, 927197120, 1019916832, 1274896040, 1854394240, 2039833664, 2549792080, 4079667328, 5099584160, 10199168320, 20398336640]

約数ペア:

[(1, 20398336640), (2, 10199168320), (4, 5099584160), (5, 4079667328), (8, 2549792080), (10, 2039833664), (11, 1854394240), (16, 1274896040), (20, 1019916832), (22, 927197120), (32, 637448020), (40, 509958416), (44, 463598560), (55, 370878848), (64, 318724010), (80, 254979208), (88, 231799280), (110, 185439424), (128, 159362005), (160, 127489604), (176, 115899640), (220, 92719712), (320, 63744802), (352, 57949820), (440, 46359856), (640, 31872401), (704, 28974910), (880, 23179928), (1408, 14487455), (1760, 11589964), (3520, 5794982), (7040, 2897491)]