81662470

素因数分解:

$2^1\times 5^1\times {\mathrm{1973}}^1\times {\mathrm{4139}}^1$

素因数の和:6119

約数の個数: 16

約数和(自身を含む): 147102480

約数和(自身を除く): 65440010

約数列:

[1, 2, 5, 10, 1973, 3946, 4139, 8278, 9865, 19730, 20695, 41390, 8166247, 16332494, 40831235, 81662470]

約数ペア:

[(1, 81662470), (2, 40831235), (5, 16332494), (10, 8166247), (1973, 41390), (3946, 20695), (4139, 19730), (8278, 9865)]