20191215

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{1549}}^1$

素因数の和:1647

約数の個数: 32

約数和(自身を含む): 35712000

約数和(自身を除く): 15520785

約数列:

[1, 3, 5, 11, 15, 33, 55, 79, 165, 237, 395, 869, 1185, 1549, 2607, 4345, 4647, 7745, 13035, 17039, 23235, 51117, 85195, 122371, 255585, 367113, 611855, 1346081, 1835565, 4038243, 6730405, 20191215]

約数ペア:

[(1, 20191215), (3, 6730405), (5, 4038243), (11, 1835565), (15, 1346081), (33, 611855), (55, 367113), (79, 255585), (165, 122371), (237, 85195), (395, 51117), (869, 23235), (1185, 17039), (1549, 13035), (2607, 7745), (4345, 4647)]