20146785

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^2\times {\mathrm{47}}^1$

素因数の和:154

約数の個数: 48

約数和(自身を含む): 35728128

約数和(自身を除く): 15581343

約数列:

[1, 3, 5, 15, 17, 41, 47, 51, 85, 123, 141, 205, 235, 255, 615, 697, 705, 799, 1681, 1927, 2091, 2397, 3485, 3995, 5043, 5781, 8405, 9635, 10455, 11985, 25215, 28577, 28905, 32759, 79007, 85731, 98277, 142885, 163795, 237021, 395035, 428655, 491385, 1185105, 1343119, 4029357, 6715595, 20146785]

約数ペア:

[(1, 20146785), (3, 6715595), (5, 4029357), (15, 1343119), (17, 1185105), (41, 491385), (47, 428655), (51, 395035), (85, 237021), (123, 163795), (141, 142885), (205, 98277), (235, 85731), (255, 79007), (615, 32759), (697, 28905), (705, 28577), (799, 25215), (1681, 11985), (1927, 10455), (2091, 9635), (2397, 8405), (3485, 5781), (3995, 5043)]