21604791

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{991}}^1$

素因数の和:1063

約数の個数: 24

約数和(自身を含む): 31950336

約数和(自身を除く): 10345545

約数列:

[1, 3, 13, 39, 43, 129, 169, 507, 559, 991, 1677, 2973, 7267, 12883, 21801, 38649, 42613, 127839, 167479, 502437, 553969, 1661907, 7201597, 21604791]

約数ペア:

[(1, 21604791), (3, 7201597), (13, 1661907), (39, 553969), (43, 502437), (129, 167479), (169, 127839), (507, 42613), (559, 38649), (991, 21801), (1677, 12883), (2973, 7267)]