278061440

素因数分解:

$2^7\times 5^1\times {\mathrm{434471}}^1$

素因数の和:434490

約数の個数: 32

約数和(自身を含む): 664742160

約数和(自身を除く): 386680720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 434471, 868942, 1737884, 2172355, 3475768, 4344710, 6951536, 8689420, 13903072, 17378840, 27806144, 34757680, 55612288, 69515360, 139030720, 278061440]

約数ペア:

[(1, 278061440), (2, 139030720), (4, 69515360), (5, 55612288), (8, 34757680), (10, 27806144), (16, 17378840), (20, 13903072), (32, 8689420), (40, 6951536), (64, 4344710), (80, 3475768), (128, 2172355), (160, 1737884), (320, 868942), (640, 434471)]