21497966

素因数分解:

$2^1\times 7^2\times {\mathrm{53}}^1\times {\mathrm{4139}}^1$

素因数の和:4208

約数の個数: 24

約数和(自身を含む): 38228760

約数和(自身を除く): 16730794

約数列:

[1, 2, 7, 14, 49, 53, 98, 106, 371, 742, 2597, 4139, 5194, 8278, 28973, 57946, 202811, 219367, 405622, 438734, 1535569, 3071138, 10748983, 21497966]

約数ペア:

[(1, 21497966), (2, 10748983), (7, 3071138), (14, 1535569), (49, 438734), (53, 405622), (98, 219367), (106, 202811), (371, 57946), (742, 28973), (2597, 8278), (4139, 5194)]