20791576

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{6449}}^1$

素因数の和:6499

約数の個数: 32

約数和(自身を含む): 43344000

約数和(自身を除く): 22552424

約数列:

[1, 2, 4, 8, 13, 26, 31, 52, 62, 104, 124, 248, 403, 806, 1612, 3224, 6449, 12898, 25796, 51592, 83837, 167674, 199919, 335348, 399838, 670696, 799676, 1599352, 2598947, 5197894, 10395788, 20791576]

約数ペア:

[(1, 20791576), (2, 10395788), (4, 5197894), (8, 2598947), (13, 1599352), (26, 799676), (31, 670696), (52, 399838), (62, 335348), (104, 199919), (124, 167674), (248, 83837), (403, 51592), (806, 25796), (1612, 12898), (3224, 6449)]