66505940

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{139}}^1\times {\mathrm{509}}^1$

素因数の和:704

約数の個数: 48

約数和(自身を含む): 143942400

約数和(自身を除く): 77436460

約数列:

[1, 2, 4, 5, 10, 20, 47, 94, 139, 188, 235, 278, 470, 509, 556, 695, 940, 1018, 1390, 2036, 2545, 2780, 5090, 6533, 10180, 13066, 23923, 26132, 32665, 47846, 65330, 70751, 95692, 119615, 130660, 141502, 239230, 283004, 353755, 478460, 707510, 1415020, 3325297, 6650594, 13301188, 16626485, 33252970, 66505940]

約数ペア:

[(1, 66505940), (2, 33252970), (4, 16626485), (5, 13301188), (10, 6650594), (20, 3325297), (47, 1415020), (94, 707510), (139, 478460), (188, 353755), (235, 283004), (278, 239230), (470, 141502), (509, 130660), (556, 119615), (695, 95692), (940, 70751), (1018, 65330), (1390, 47846), (2036, 32665), (2545, 26132), (2780, 23923), (5090, 13066), (6533, 10180)]