20423475

素因数分解:

$3^3\times 5^2\times {\mathrm{79}}^1\times {\mathrm{383}}^1$

素因数の和:481

約数の個数: 48

約数和(自身を含む): 38092800

約数和(自身を除く): 17669325

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 79, 135, 225, 237, 383, 395, 675, 711, 1149, 1185, 1915, 1975, 2133, 3447, 3555, 5745, 5925, 9575, 10341, 10665, 17235, 17775, 28725, 30257, 51705, 53325, 86175, 90771, 151285, 258525, 272313, 453855, 756425, 816939, 1361565, 2269275, 4084695, 6807825, 20423475]

約数ペア:

[(1, 20423475), (3, 6807825), (5, 4084695), (9, 2269275), (15, 1361565), (25, 816939), (27, 756425), (45, 453855), (75, 272313), (79, 258525), (135, 151285), (225, 90771), (237, 86175), (383, 53325), (395, 51705), (675, 30257), (711, 28725), (1149, 17775), (1185, 17235), (1915, 10665), (1975, 10341), (2133, 9575), (3447, 5925), (3555, 5745)]