204442240

素因数分解:

$2^7\times 5^1\times {\mathrm{319441}}^1$

素因数の和:319460

約数の個数: 32

約数和(自身を含む): 488746260

約数和(自身を除く): 284304020

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 319441, 638882, 1277764, 1597205, 2555528, 3194410, 5111056, 6388820, 10222112, 12777640, 20444224, 25555280, 40888448, 51110560, 102221120, 204442240]

約数ペア:

[(1, 204442240), (2, 102221120), (4, 51110560), (5, 40888448), (8, 25555280), (10, 20444224), (16, 12777640), (20, 10222112), (32, 6388820), (40, 5111056), (64, 3194410), (80, 2555528), (128, 1597205), (160, 1277764), (320, 638882), (640, 319441)]