20859579

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{887}}^1$

素因数の和:976

約数の個数: 32

約数和(自身を含む): 33815040

約数和(自身を除く): 12955461

約数列:

[1, 3, 9, 13, 27, 39, 67, 117, 201, 351, 603, 871, 887, 1809, 2613, 2661, 7839, 7983, 11531, 23517, 23949, 34593, 59429, 103779, 178287, 311337, 534861, 772577, 1604583, 2317731, 6953193, 20859579]

約数ペア:

[(1, 20859579), (3, 6953193), (9, 2317731), (13, 1604583), (27, 772577), (39, 534861), (67, 311337), (117, 178287), (201, 103779), (351, 59429), (603, 34593), (871, 23949), (887, 23517), (1809, 11531), (2613, 7983), (2661, 7839)]