1998518

素因数分解:

$2^1\times {\mathrm{37}}^1\times {\mathrm{113}}^1\times {\mathrm{239}}^1$

素因数の和:391

約数の個数: 16

約数和(自身を含む): 3119040

約数和(自身を除く): 1120522

約数列:

[1, 2, 37, 74, 113, 226, 239, 478, 4181, 8362, 8843, 17686, 27007, 54014, 999259, 1998518]

約数ペア:

[(1, 1998518), (2, 999259), (37, 54014), (74, 27007), (113, 17686), (226, 8843), (239, 8362), (478, 4181)]