19993480

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{38449}}^1$

素因数の和:38473

約数の個数: 32

約数和(自身を含む): 48447000

約数和(自身を除く): 28453520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 38449, 76898, 153796, 192245, 307592, 384490, 499837, 768980, 999674, 1537960, 1999348, 2499185, 3998696, 4998370, 9996740, 19993480]

約数ペア:

[(1, 19993480), (2, 9996740), (4, 4998370), (5, 3998696), (8, 2499185), (10, 1999348), (13, 1537960), (20, 999674), (26, 768980), (40, 499837), (52, 384490), (65, 307592), (104, 192245), (130, 153796), (260, 76898), (520, 38449)]