66581240

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{389}}^2$

素因数の和:800

約数の個数: 48

約数和(自身を含む): 163847880

約数和(自身を除く): 97266640

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 389, 440, 778, 1556, 1945, 3112, 3890, 4279, 7780, 8558, 15560, 17116, 21395, 34232, 42790, 85580, 151321, 171160, 302642, 605284, 756605, 1210568, 1513210, 1664531, 3026420, 3329062, 6052840, 6658124, 8322655, 13316248, 16645310, 33290620, 66581240]

約数ペア:

[(1, 66581240), (2, 33290620), (4, 16645310), (5, 13316248), (8, 8322655), (10, 6658124), (11, 6052840), (20, 3329062), (22, 3026420), (40, 1664531), (44, 1513210), (55, 1210568), (88, 756605), (110, 605284), (220, 302642), (389, 171160), (440, 151321), (778, 85580), (1556, 42790), (1945, 34232), (3112, 21395), (3890, 17116), (4279, 15560), (7780, 8558)]