19928960

素因数分解:

$2^7\times 5^1\times {\mathrm{31139}}^1$

素因数の和:31158

約数の個数: 32

約数和(自身を含む): 47644200

約数和(自身を除く): 27715240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 31139, 62278, 124556, 155695, 249112, 311390, 498224, 622780, 996448, 1245560, 1992896, 2491120, 3985792, 4982240, 9964480, 19928960]

約数ペア:

[(1, 19928960), (2, 9964480), (4, 4982240), (5, 3985792), (8, 2491120), (10, 1992896), (16, 1245560), (20, 996448), (32, 622780), (40, 498224), (64, 311390), (80, 249112), (128, 155695), (160, 124556), (320, 62278), (640, 31139)]