21810465

素因数分解:

$3^5\times 5^1\times {\mathrm{29}}^1\times {\mathrm{619}}^1$

素因数の和:668

約数の個数: 48

約数和(自身を含む): 40622400

約数和(自身を除く): 18811935

約数列:

[1, 3, 5, 9, 15, 27, 29, 45, 81, 87, 135, 145, 243, 261, 405, 435, 619, 783, 1215, 1305, 1857, 2349, 3095, 3915, 5571, 7047, 9285, 11745, 16713, 17951, 27855, 35235, 50139, 53853, 83565, 89755, 150417, 161559, 250695, 269265, 484677, 752085, 807795, 1454031, 2423385, 4362093, 7270155, 21810465]

約数ペア:

[(1, 21810465), (3, 7270155), (5, 4362093), (9, 2423385), (15, 1454031), (27, 807795), (29, 752085), (45, 484677), (81, 269265), (87, 250695), (135, 161559), (145, 150417), (243, 89755), (261, 83565), (405, 53853), (435, 50139), (619, 35235), (783, 27855), (1215, 17951), (1305, 16713), (1857, 11745), (2349, 9285), (3095, 7047), (3915, 5571)]