21225716

素因数分解:

$2^2\times {\mathrm{37}}^1\times {\mathrm{173}}^1\times {\mathrm{829}}^1$

素因数の和:1043

約数の個数: 24

約数和(自身を含む): 38415720

約数和(自身を除く): 17190004

約数列:

[1, 2, 4, 37, 74, 148, 173, 346, 692, 829, 1658, 3316, 6401, 12802, 25604, 30673, 61346, 122692, 143417, 286834, 573668, 5306429, 10612858, 21225716]

約数ペア:

[(1, 21225716), (2, 10612858), (4, 5306429), (37, 573668), (74, 286834), (148, 143417), (173, 122692), (346, 61346), (692, 30673), (829, 25604), (1658, 12802), (3316, 6401)]