1620996880

素因数分解:

$2^4\times 5^1\times {\mathrm{20262461}}^1$

素因数の和:20262474

約数の個数: 20

約数和(自身を含む): 3768817932

約数和(自身を除く): 2147821052

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 20262461, 40524922, 81049844, 101312305, 162099688, 202624610, 324199376, 405249220, 810498440, 1620996880]

約数ペア:

[(1, 1620996880), (2, 810498440), (4, 405249220), (5, 324199376), (8, 202624610), (10, 162099688), (16, 101312305), (20, 81049844), (40, 40524922), (80, 20262461)]