212912240

素因数分解:

$2^4\times 5^1\times {\mathrm{2661403}}^1$

素因数の和:2661416

約数の個数: 20

約数和(自身を含む): 495021144

約数和(自身を除く): 282108904

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2661403, 5322806, 10645612, 13307015, 21291224, 26614030, 42582448, 53228060, 106456120, 212912240]

約数ペア:

[(1, 212912240), (2, 106456120), (4, 53228060), (5, 42582448), (8, 26614030), (10, 21291224), (16, 13307015), (20, 10645612), (40, 5322806), (80, 2661403)]