20804480

素因数分解:

$2^7\times 5^1\times {\mathrm{32507}}^1$

素因数の和:32526

約数の個数: 32

約数和(自身を含む): 49737240

約数和(自身を除く): 28932760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 32507, 65014, 130028, 162535, 260056, 325070, 520112, 650140, 1040224, 1300280, 2080448, 2600560, 4160896, 5201120, 10402240, 20804480]

約数ペア:

[(1, 20804480), (2, 10402240), (4, 5201120), (5, 4160896), (8, 2600560), (10, 2080448), (16, 1300280), (20, 1040224), (32, 650140), (40, 520112), (64, 325070), (80, 260056), (128, 162535), (160, 130028), (320, 65014), (640, 32507)]