18744385

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{151}}^1$

素因数の和:265

約数の個数: 32

約数和(自身を含む): 25784064

約数和(自身を除く): 7039679

約数列:

[1, 5, 11, 37, 55, 61, 151, 185, 305, 407, 671, 755, 1661, 2035, 2257, 3355, 5587, 8305, 9211, 11285, 24827, 27935, 46055, 61457, 101321, 124135, 307285, 340807, 506605, 1704035, 3748877, 18744385]

約数ペア:

[(1, 18744385), (5, 3748877), (11, 1704035), (37, 506605), (55, 340807), (61, 307285), (151, 124135), (185, 101321), (305, 61457), (407, 46055), (671, 27935), (755, 24827), (1661, 11285), (2035, 9211), (2257, 8305), (3355, 5587)]