80919580

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{82571}}^1$

素因数の和:82594

約数の個数: 36

約数和(自身を含む): 197677368

約数和(自身を除く): 116757788

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 82571, 165142, 330284, 412855, 577997, 825710, 1155994, 1651420, 2311988, 2889985, 4045979, 5779970, 8091958, 11559940, 16183916, 20229895, 40459790, 80919580]

約数ペア:

[(1, 80919580), (2, 40459790), (4, 20229895), (5, 16183916), (7, 11559940), (10, 8091958), (14, 5779970), (20, 4045979), (28, 2889985), (35, 2311988), (49, 1651420), (70, 1155994), (98, 825710), (140, 577997), (196, 412855), (245, 330284), (490, 165142), (980, 82571)]