20805941385

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{663349}}^1$

素因数の和:663418

約数の個数: 48

約数和(自身を含む): 39116422800

約数和(自身を除く): 18310481415

約数列:

[1, 3, 5, 9, 15, 17, 41, 45, 51, 85, 123, 153, 205, 255, 369, 615, 697, 765, 1845, 2091, 3485, 6273, 10455, 31365, 663349, 1990047, 3316745, 5970141, 9950235, 11276933, 27197309, 29850705, 33830799, 56384665, 81591927, 101492397, 135986545, 169153995, 244775781, 407959635, 462354253, 507461985, 1223878905, 1387062759, 2311771265, 4161188277, 6935313795, 20805941385]

約数ペア:

[(1, 20805941385), (3, 6935313795), (5, 4161188277), (9, 2311771265), (15, 1387062759), (17, 1223878905), (41, 507461985), (45, 462354253), (51, 407959635), (85, 244775781), (123, 169153995), (153, 135986545), (205, 101492397), (255, 81591927), (369, 56384665), (615, 33830799), (697, 29850705), (765, 27197309), (1845, 11276933), (2091, 9950235), (3485, 5970141), (6273, 3316745), (10455, 1990047), (31365, 663349)]