20917358

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{3671}}^1$

素因数の和:3728

約数の個数: 32

約数和(自身を含む): 40186368

約数和(自身を除く): 19269010

約数列:

[1, 2, 7, 11, 14, 22, 37, 74, 77, 154, 259, 407, 518, 814, 2849, 3671, 5698, 7342, 25697, 40381, 51394, 80762, 135827, 271654, 282667, 565334, 950789, 1494097, 1901578, 2988194, 10458679, 20917358]

約数ペア:

[(1, 20917358), (2, 10458679), (7, 2988194), (11, 1901578), (14, 1494097), (22, 950789), (37, 565334), (74, 282667), (77, 271654), (154, 135827), (259, 80762), (407, 51394), (518, 40381), (814, 25697), (2849, 7342), (3671, 5698)]