20897905

素因数分解:

$5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{14563}}^1$

素因数の和:14616

約数の個数: 16

約数和(自身を含む): 29361024

約数和(自身を除く): 8463119

約数列:

[1, 5, 7, 35, 41, 205, 287, 1435, 14563, 72815, 101941, 509705, 597083, 2985415, 4179581, 20897905]

約数ペア:

[(1, 20897905), (5, 4179581), (7, 2985415), (35, 597083), (41, 509705), (205, 101941), (287, 72815), (1435, 14563)]