81931880

素因数分解:

$2^3\times 5^1\times {\mathrm{179}}^1\times {\mathrm{11443}}^1$

素因数の和:11633

約数の個数: 32

約数和(自身を含む): 185392800

約数和(自身を除く): 103460920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 179, 358, 716, 895, 1432, 1790, 3580, 7160, 11443, 22886, 45772, 57215, 91544, 114430, 228860, 457720, 2048297, 4096594, 8193188, 10241485, 16386376, 20482970, 40965940, 81931880]

約数ペア:

[(1, 81931880), (2, 40965940), (4, 20482970), (5, 16386376), (8, 10241485), (10, 8193188), (20, 4096594), (40, 2048297), (179, 457720), (358, 228860), (716, 114430), (895, 91544), (1432, 57215), (1790, 45772), (3580, 22886), (7160, 11443)]