20197331408

素因数分解:

$2^4\times {\mathrm{1559}}^1\times {\mathrm{809707}}^1$

素因数の和:811274

約数の個数: 20

約数和(自身を含む): 39157478880

約数和(自身を除く): 18960147472

約数列:

[1, 2, 4, 8, 16, 1559, 3118, 6236, 12472, 24944, 809707, 1619414, 3238828, 6477656, 12955312, 1262333213, 2524666426, 5049332852, 10098665704, 20197331408]

約数ペア:

[(1, 20197331408), (2, 10098665704), (4, 5049332852), (8, 2524666426), (16, 1262333213), (1559, 12955312), (3118, 6477656), (6236, 3238828), (12472, 1619414), (24944, 809707)]