31085240

素因数分解:

$2^3\times 5^1\times {\mathrm{571}}^1\times {\mathrm{1361}}^1$

素因数の和:1943

約数の個数: 32

約数和(自身を含む): 70115760

約数和(自身を除く): 39030520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 571, 1142, 1361, 2284, 2722, 2855, 4568, 5444, 5710, 6805, 10888, 11420, 13610, 22840, 27220, 54440, 777131, 1554262, 3108524, 3885655, 6217048, 7771310, 15542620, 31085240]

約数ペア:

[(1, 31085240), (2, 15542620), (4, 7771310), (5, 6217048), (8, 3885655), (10, 3108524), (20, 1554262), (40, 777131), (571, 54440), (1142, 27220), (1361, 22840), (2284, 13610), (2722, 11420), (2855, 10888), (4568, 6805), (5444, 5710)]