21873680

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{3851}}^1$

素因数の和:3935

約数の個数: 40

約数和(自身を含む): 51585984

約数和(自身を除く): 29712304

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 3851, 5680, 7702, 15404, 19255, 30808, 38510, 61616, 77020, 154040, 273421, 308080, 546842, 1093684, 1367105, 2187368, 2734210, 4374736, 5468420, 10936840, 21873680]

約数ペア:

[(1, 21873680), (2, 10936840), (4, 5468420), (5, 4374736), (8, 2734210), (10, 2187368), (16, 1367105), (20, 1093684), (40, 546842), (71, 308080), (80, 273421), (142, 154040), (284, 77020), (355, 61616), (568, 38510), (710, 30808), (1136, 19255), (1420, 15404), (2840, 7702), (3851, 5680)]