87644840

素因数分解:

$2^3\times 5^1\times {\mathrm{2191121}}^1$

素因数の和:2191132

約数の個数: 16

約数和(自身を含む): 197200980

約数和(自身を除く): 109556140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2191121, 4382242, 8764484, 10955605, 17528968, 21911210, 43822420, 87644840]

約数ペア:

[(1, 87644840), (2, 43822420), (4, 21911210), (5, 17528968), (8, 10955605), (10, 8764484), (20, 4382242), (40, 2191121)]