64915880

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{20543}}^1$

素因数の和:20633

約数の個数: 32

約数和(自身を含む): 147916800

約数和(自身を除く): 83000920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 20543, 41086, 82172, 102715, 164344, 205430, 410860, 821720, 1622897, 3245794, 6491588, 8114485, 12983176, 16228970, 32457940, 64915880]

約数ペア:

[(1, 64915880), (2, 32457940), (4, 16228970), (5, 12983176), (8, 8114485), (10, 6491588), (20, 3245794), (40, 1622897), (79, 821720), (158, 410860), (316, 205430), (395, 164344), (632, 102715), (790, 82172), (1580, 41086), (3160, 20543)]