80815880

素因数分解:

$2^3\times 5^1\times {\mathrm{457}}^1\times {\mathrm{4421}}^1$

素因数の和:4889

約数の個数: 32

約数和(自身を含む): 182274840

約数和(自身を除く): 101458960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 457, 914, 1828, 2285, 3656, 4421, 4570, 8842, 9140, 17684, 18280, 22105, 35368, 44210, 88420, 176840, 2020397, 4040794, 8081588, 10101985, 16163176, 20203970, 40407940, 80815880]

約数ペア:

[(1, 80815880), (2, 40407940), (4, 20203970), (5, 16163176), (8, 10101985), (10, 8081588), (20, 4040794), (40, 2020397), (457, 176840), (914, 88420), (1828, 44210), (2285, 35368), (3656, 22105), (4421, 18280), (4570, 17684), (8842, 9140)]