128218240

素因数分解:

$2^7\times 5^1\times {\mathrm{200341}}^1$

素因数の和:200360

約数の個数: 32

約数和(自身を含む): 306523260

約数和(自身を除く): 178305020

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 200341, 400682, 801364, 1001705, 1602728, 2003410, 3205456, 4006820, 6410912, 8013640, 12821824, 16027280, 25643648, 32054560, 64109120, 128218240]

約数ペア:

[(1, 128218240), (2, 64109120), (4, 32054560), (5, 25643648), (8, 16027280), (10, 12821824), (16, 8013640), (20, 6410912), (32, 4006820), (40, 3205456), (64, 2003410), (80, 1602728), (128, 1001705), (160, 801364), (320, 400682), (640, 200341)]