19981145

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{3361}}^1$

素因数の和:3436

約数の個数: 16

約数和(自身を含む): 25416720

約数和(自身を除く): 5435575

約数列:

[1, 5, 29, 41, 145, 205, 1189, 3361, 5945, 16805, 97469, 137801, 487345, 689005, 3996229, 19981145]

約数ペア:

[(1, 19981145), (5, 3996229), (29, 689005), (41, 487345), (145, 137801), (205, 97469), (1189, 16805), (3361, 5945)]