21699045

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{619}}^1$

素因数の和:690

約数の個数: 48

約数和(自身を含む): 40622400

約数和(自身を除く): 18923355

約数列:

[1, 3, 5, 9, 15, 19, 41, 45, 57, 95, 123, 171, 205, 285, 369, 615, 619, 779, 855, 1845, 1857, 2337, 3095, 3895, 5571, 7011, 9285, 11685, 11761, 25379, 27855, 35055, 35283, 58805, 76137, 105849, 126895, 176415, 228411, 380685, 482201, 529245, 1142055, 1446603, 2411005, 4339809, 7233015, 21699045]

約数ペア:

[(1, 21699045), (3, 7233015), (5, 4339809), (9, 2411005), (15, 1446603), (19, 1142055), (41, 529245), (45, 482201), (57, 380685), (95, 228411), (123, 176415), (171, 126895), (205, 105849), (285, 76137), (369, 58805), (615, 35283), (619, 35055), (779, 27855), (855, 25379), (1845, 11761), (1857, 11685), (2337, 9285), (3095, 7011), (3895, 5571)]