21002163

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{4049}}^1$

素因数の和:4091

約数の個数: 32

約数和(自身を含む): 36288000

約数和(自身を除く): 15285837

約数列:

[1, 3, 7, 13, 19, 21, 39, 57, 91, 133, 247, 273, 399, 741, 1729, 4049, 5187, 12147, 28343, 52637, 76931, 85029, 157911, 230793, 368459, 538517, 1000103, 1105377, 1615551, 3000309, 7000721, 21002163]

約数ペア:

[(1, 21002163), (3, 7000721), (7, 3000309), (13, 1615551), (19, 1105377), (21, 1000103), (39, 538517), (57, 368459), (91, 230793), (133, 157911), (247, 85029), (273, 76931), (399, 52637), (741, 28343), (1729, 12147), (4049, 5187)]