18750009

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{5449}}^1$

素因数の和:5520

約数の個数: 16

約数和(自身を含む): 26508800

約数和(自身を除く): 7758791

約数列:

[1, 3, 31, 37, 93, 111, 1147, 3441, 5449, 16347, 168919, 201613, 506757, 604839, 6250003, 18750009]

約数ペア:

[(1, 18750009), (3, 6250003), (31, 604839), (37, 506757), (93, 201613), (111, 168919), (1147, 16347), (3441, 5449)]