78284480

素因数分解:

$2^6\times 5^1\times {\mathrm{244639}}^1$

素因数の和:244656

約数の個数: 28

約数和(自身を含む): 186415680

約数和(自身を除く): 108131200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 244639, 489278, 978556, 1223195, 1957112, 2446390, 3914224, 4892780, 7828448, 9785560, 15656896, 19571120, 39142240, 78284480]

約数ペア:

[(1, 78284480), (2, 39142240), (4, 19571120), (5, 15656896), (8, 9785560), (10, 7828448), (16, 4892780), (20, 3914224), (32, 2446390), (40, 1957112), (64, 1223195), (80, 978556), (160, 489278), (320, 244639)]