21764680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{77731}}^1$

素因数の和:77749

約数の個数: 32

約数和(自身を含む): 55967040

約数和(自身を除く): 34202360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 77731, 155462, 310924, 388655, 544117, 621848, 777310, 1088234, 1554620, 2176468, 2720585, 3109240, 4352936, 5441170, 10882340, 21764680]

約数ペア:

[(1, 21764680), (2, 10882340), (4, 5441170), (5, 4352936), (7, 3109240), (8, 2720585), (10, 2176468), (14, 1554620), (20, 1088234), (28, 777310), (35, 621848), (40, 544117), (56, 388655), (70, 310924), (140, 155462), (280, 77731)]