20587784

素因数分解:

$2^3\times 7^1\times {\mathrm{563}}^1\times {\mathrm{653}}^1$

素因数の和:1229

約数の個数: 32

約数和(自身を含む): 44262720

約数和(自身を除く): 23674936

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 563, 653, 1126, 1306, 2252, 2612, 3941, 4504, 4571, 5224, 7882, 9142, 15764, 18284, 31528, 36568, 367639, 735278, 1470556, 2573473, 2941112, 5146946, 10293892, 20587784]

約数ペア:

[(1, 20587784), (2, 10293892), (4, 5146946), (7, 2941112), (8, 2573473), (14, 1470556), (28, 735278), (56, 367639), (563, 36568), (653, 31528), (1126, 18284), (1306, 15764), (2252, 9142), (2612, 7882), (3941, 5224), (4504, 4571)]