19756660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{12829}}^1$

素因数の和:12856

約数の個数: 48

約数和(自身を含む): 51730560

約数和(自身を除く): 31973900

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 12829, 25658, 51316, 64145, 89803, 128290, 141119, 179606, 256580, 282238, 359212, 449015, 564476, 705595, 898030, 987833, 1411190, 1796060, 1975666, 2822380, 3951332, 4939165, 9878330, 19756660]

約数ペア:

[(1, 19756660), (2, 9878330), (4, 4939165), (5, 3951332), (7, 2822380), (10, 1975666), (11, 1796060), (14, 1411190), (20, 987833), (22, 898030), (28, 705595), (35, 564476), (44, 449015), (55, 359212), (70, 282238), (77, 256580), (110, 179606), (140, 141119), (154, 128290), (220, 89803), (308, 64145), (385, 51316), (770, 25658), (1540, 12829)]