77449640

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{27271}}^1$

素因数の和:27353

約数の個数: 32

約数和(自身を含む): 176722560

約数和(自身を除く): 99272920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 27271, 54542, 109084, 136355, 218168, 272710, 545420, 1090840, 1936241, 3872482, 7744964, 9681205, 15489928, 19362410, 38724820, 77449640]

約数ペア:

[(1, 77449640), (2, 38724820), (4, 19362410), (5, 15489928), (8, 9681205), (10, 7744964), (20, 3872482), (40, 1936241), (71, 1090840), (142, 545420), (284, 272710), (355, 218168), (568, 136355), (710, 109084), (1420, 54542), (2840, 27271)]