20156895

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{947}}^1$

素因数の和:1012

約数の個数: 48

約数和(自身を含む): 39042432

約数和(自身を除く): 18885537

約数列:

[1, 3, 5, 9, 11, 15, 33, 43, 45, 55, 99, 129, 165, 215, 387, 473, 495, 645, 947, 1419, 1935, 2365, 2841, 4257, 4735, 7095, 8523, 10417, 14205, 21285, 31251, 40721, 42615, 52085, 93753, 122163, 156255, 203605, 366489, 447931, 468765, 610815, 1343793, 1832445, 2239655, 4031379, 6718965, 20156895]

約数ペア:

[(1, 20156895), (3, 6718965), (5, 4031379), (9, 2239655), (11, 1832445), (15, 1343793), (33, 610815), (43, 468765), (45, 447931), (55, 366489), (99, 203605), (129, 156255), (165, 122163), (215, 93753), (387, 52085), (473, 42615), (495, 40721), (645, 31251), (947, 21285), (1419, 14205), (1935, 10417), (2365, 8523), (2841, 7095), (4257, 4735)]