128128420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{915203}}^1$

素因数の和:915219

約数の個数: 24

約数和(自身を含む): 307508544

約数和(自身を除く): 179380124

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 915203, 1830406, 3660812, 4576015, 6406421, 9152030, 12812842, 18304060, 25625684, 32032105, 64064210, 128128420]

約数ペア:

[(1, 128128420), (2, 64064210), (4, 32032105), (5, 25625684), (7, 18304060), (10, 12812842), (14, 9152030), (20, 6406421), (28, 4576015), (35, 3660812), (70, 1830406), (140, 915203)]