21542668

素因数分解:

$2^2\times 7^1\times {\mathrm{79}}^1\times {\mathrm{9739}}^1$

素因数の和:9829

約数の個数: 24

約数和(自身を含む): 43635200

約数和(自身を除く): 22092532

約数列:

[1, 2, 4, 7, 14, 28, 79, 158, 316, 553, 1106, 2212, 9739, 19478, 38956, 68173, 136346, 272692, 769381, 1538762, 3077524, 5385667, 10771334, 21542668]

約数ペア:

[(1, 21542668), (2, 10771334), (4, 5385667), (7, 3077524), (14, 1538762), (28, 769381), (79, 272692), (158, 136346), (316, 68173), (553, 38956), (1106, 19478), (2212, 9739)]