66660520

素因数分解:

$2^3\times 5^1\times {\mathrm{353}}^1\times {\mathrm{4721}}^1$

素因数の和:5085

約数の個数: 32

約数和(自身を含む): 150442920

約数和(自身を除く): 83782400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 353, 706, 1412, 1765, 2824, 3530, 4721, 7060, 9442, 14120, 18884, 23605, 37768, 47210, 94420, 188840, 1666513, 3333026, 6666052, 8332565, 13332104, 16665130, 33330260, 66660520]

約数ペア:

[(1, 66660520), (2, 33330260), (4, 16665130), (5, 13332104), (8, 8332565), (10, 6666052), (20, 3333026), (40, 1666513), (353, 188840), (706, 94420), (1412, 47210), (1765, 37768), (2824, 23605), (3530, 18884), (4721, 14120), (7060, 9442)]