31519120

素因数分解:

$2^4\times 5^1\times {\mathrm{393989}}^1$

素因数の和:394002

約数の個数: 20

約数和(自身を含む): 73282140

約数和(自身を除く): 41763020

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 393989, 787978, 1575956, 1969945, 3151912, 3939890, 6303824, 7879780, 15759560, 31519120]

約数ペア:

[(1, 31519120), (2, 15759560), (4, 7879780), (5, 6303824), (8, 3939890), (10, 3151912), (16, 1969945), (20, 1575956), (40, 787978), (80, 393989)]