51620480

素因数分解:

$2^7\times 5^1\times {\mathrm{80657}}^1$

素因数の和:80676

約数の個数: 32

約数和(自身を含む): 123406740

約数和(自身を除く): 71786260

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 80657, 161314, 322628, 403285, 645256, 806570, 1290512, 1613140, 2581024, 3226280, 5162048, 6452560, 10324096, 12905120, 25810240, 51620480]

約数ペア:

[(1, 51620480), (2, 25810240), (4, 12905120), (5, 10324096), (8, 6452560), (10, 5162048), (16, 3226280), (20, 2581024), (32, 1613140), (40, 1290512), (64, 806570), (80, 645256), (128, 403285), (160, 322628), (320, 161314), (640, 80657)]