123905920

素因数分解:

$2^7\times 5^1\times {\mathrm{193603}}^1$

素因数の和:193622

約数の個数: 32

約数和(自身を含む): 296214120

約数和(自身を除く): 172308200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 193603, 387206, 774412, 968015, 1548824, 1936030, 3097648, 3872060, 6195296, 7744120, 12390592, 15488240, 24781184, 30976480, 61952960, 123905920]

約数ペア:

[(1, 123905920), (2, 61952960), (4, 30976480), (5, 24781184), (8, 15488240), (10, 12390592), (16, 7744120), (20, 6195296), (32, 3872060), (40, 3097648), (64, 1936030), (80, 1548824), (128, 968015), (160, 774412), (320, 387206), (640, 193603)]