21990959913

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{461}}^1\times {\mathrm{9337}}^1$

素因数の和:9945

約数の個数: 32

約数和(自身を含む): 31890241152

約数和(自身を除く): 9899281239

約数列:

[1, 3, 13, 39, 131, 393, 461, 1383, 1703, 5109, 5993, 9337, 17979, 28011, 60391, 121381, 181173, 364143, 785083, 1223147, 2355249, 3669441, 4304357, 12913071, 15900911, 47702733, 55956641, 167869923, 563870767, 1691612301, 7330319971, 21990959913]

約数ペア:

[(1, 21990959913), (3, 7330319971), (13, 1691612301), (39, 563870767), (131, 167869923), (393, 55956641), (461, 47702733), (1383, 15900911), (1703, 12913071), (5109, 4304357), (5993, 3669441), (9337, 2355249), (17979, 1223147), (28011, 785083), (60391, 364143), (121381, 181173)]