81988340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{271}}^1\times {\mathrm{2161}}^1$

素因数の和:2448

約数の個数: 48

約数和(自身を含む): 197589504

約数和(自身を除く): 115601164

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 271, 542, 1084, 1355, 1897, 2161, 2710, 3794, 4322, 5420, 7588, 8644, 9485, 10805, 15127, 18970, 21610, 30254, 37940, 43220, 60508, 75635, 151270, 302540, 585631, 1171262, 2342524, 2928155, 4099417, 5856310, 8198834, 11712620, 16397668, 20497085, 40994170, 81988340]

約数ペア:

[(1, 81988340), (2, 40994170), (4, 20497085), (5, 16397668), (7, 11712620), (10, 8198834), (14, 5856310), (20, 4099417), (28, 2928155), (35, 2342524), (70, 1171262), (140, 585631), (271, 302540), (542, 151270), (1084, 75635), (1355, 60508), (1897, 43220), (2161, 37940), (2710, 30254), (3794, 21610), (4322, 18970), (5420, 15127), (7588, 10805), (8644, 9485)]