78613940

素因数分解:

$2^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{9901}}^1$

素因数の和:10307

約数の個数: 24

約数和(自身を含む): 165521832

約数和(自身を除く): 86907892

約数列:

[1, 2, 4, 5, 10, 20, 397, 794, 1588, 1985, 3970, 7940, 9901, 19802, 39604, 49505, 99010, 198020, 3930697, 7861394, 15722788, 19653485, 39306970, 78613940]

約数ペア:

[(1, 78613940), (2, 39306970), (4, 19653485), (5, 15722788), (10, 7861394), (20, 3930697), (397, 198020), (794, 99010), (1588, 49505), (1985, 39604), (3970, 19802), (7940, 9901)]