20993680

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{9049}}^1$

素因数の和:9091

約数の個数: 40

約数和(自身を含む): 50499000

約数和(自身を除く): 29505320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 116, 145, 232, 290, 464, 580, 1160, 2320, 9049, 18098, 36196, 45245, 72392, 90490, 144784, 180980, 262421, 361960, 524842, 723920, 1049684, 1312105, 2099368, 2624210, 4198736, 5248420, 10496840, 20993680]

約数ペア:

[(1, 20993680), (2, 10496840), (4, 5248420), (5, 4198736), (8, 2624210), (10, 2099368), (16, 1312105), (20, 1049684), (29, 723920), (40, 524842), (58, 361960), (80, 262421), (116, 180980), (145, 144784), (232, 90490), (290, 72392), (464, 45245), (580, 36196), (1160, 18098), (2320, 9049)]