18710648

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{2389}}^1$

素因数の和:2495

約数の個数: 32

約数和(自身を含む): 38718000

約数和(自身を除く): 20007352

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 89, 178, 356, 712, 979, 1958, 2389, 3916, 4778, 7832, 9556, 19112, 26279, 52558, 105116, 210232, 212621, 425242, 850484, 1700968, 2338831, 4677662, 9355324, 18710648]

約数ペア:

[(1, 18710648), (2, 9355324), (4, 4677662), (8, 2338831), (11, 1700968), (22, 850484), (44, 425242), (88, 212621), (89, 210232), (178, 105116), (356, 52558), (712, 26279), (979, 19112), (1958, 9556), (2389, 7832), (3916, 4778)]