66400520

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{31321}}^1$

素因数の和:31385

約数の個数: 32

約数和(自身を含む): 152224920

約数和(自身を除く): 85824400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 31321, 62642, 125284, 156605, 250568, 313210, 626420, 1252840, 1660013, 3320026, 6640052, 8300065, 13280104, 16600130, 33200260, 66400520]

約数ペア:

[(1, 66400520), (2, 33200260), (4, 16600130), (5, 13280104), (8, 8300065), (10, 6640052), (20, 3320026), (40, 1660013), (53, 1252840), (106, 626420), (212, 313210), (265, 250568), (424, 156605), (530, 125284), (1060, 62642), (2120, 31321)]