28154980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{201107}}^1$

素因数の和:201123

約数の個数: 24

約数和(自身を含む): 67572288

約数和(自身を除く): 39417308

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 201107, 402214, 804428, 1005535, 1407749, 2011070, 2815498, 4022140, 5630996, 7038745, 14077490, 28154980]

約数ペア:

[(1, 28154980), (2, 14077490), (4, 7038745), (5, 5630996), (7, 4022140), (10, 2815498), (14, 2011070), (20, 1407749), (28, 1005535), (35, 804428), (70, 402214), (140, 201107)]