201520340

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{205633}}^1$

素因数の和:205656

約数の個数: 36

約数和(自身を含む): 492287796

約数和(自身を除く): 290767456

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 205633, 411266, 822532, 1028165, 1439431, 2056330, 2878862, 4112660, 5757724, 7197155, 10076017, 14394310, 20152034, 28788620, 40304068, 50380085, 100760170, 201520340]

約数ペア:

[(1, 201520340), (2, 100760170), (4, 50380085), (5, 40304068), (7, 28788620), (10, 20152034), (14, 14394310), (20, 10076017), (28, 7197155), (35, 5757724), (49, 4112660), (70, 2878862), (98, 2056330), (140, 1439431), (196, 1028165), (245, 822532), (490, 411266), (980, 205633)]