28641920

素因数分解:

$2^7\times 5^1\times {\mathrm{44753}}^1$

素因数の和:44772

約数の個数: 32

約数和(自身を含む): 68473620

約数和(自身を除く): 39831700

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 44753, 89506, 179012, 223765, 358024, 447530, 716048, 895060, 1432096, 1790120, 2864192, 3580240, 5728384, 7160480, 14320960, 28641920]

約数ペア:

[(1, 28641920), (2, 14320960), (4, 7160480), (5, 5728384), (8, 3580240), (10, 2864192), (16, 1790120), (20, 1432096), (32, 895060), (40, 716048), (64, 447530), (80, 358024), (128, 223765), (160, 179012), (320, 89506), (640, 44753)]