21397574

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{22619}}^1$

素因数の和:22675

約数の個数: 16

約数和(自身を含む): 35830080

約数和(自身を除く): 14432506

約数列:

[1, 2, 11, 22, 43, 86, 473, 946, 22619, 45238, 248809, 497618, 972617, 1945234, 10698787, 21397574]

約数ペア:

[(1, 21397574), (2, 10698787), (11, 1945234), (22, 972617), (43, 497618), (86, 248809), (473, 45238), (946, 22619)]