25312840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{90403}}^1$

素因数の和:90421

約数の個数: 32

約数和(自身を含む): 65090880

約数和(自身を除く): 39778040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 90403, 180806, 361612, 452015, 632821, 723224, 904030, 1265642, 1808060, 2531284, 3164105, 3616120, 5062568, 6328210, 12656420, 25312840]

約数ペア:

[(1, 25312840), (2, 12656420), (4, 6328210), (5, 5062568), (7, 3616120), (8, 3164105), (10, 2531284), (14, 1808060), (20, 1265642), (28, 904030), (35, 723224), (40, 632821), (56, 452015), (70, 361612), (140, 180806), (280, 90403)]