20817369

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{79}}^1$

素因数の和:194

約数の個数: 48

約数和(自身を含む): 33945600

約数和(自身を除く): 13128231

約数列:

[1, 3, 9, 19, 23, 57, 67, 69, 79, 171, 201, 207, 237, 437, 603, 711, 1273, 1311, 1501, 1541, 1817, 3819, 3933, 4503, 4623, 5293, 5451, 11457, 13509, 13869, 15879, 16353, 29279, 34523, 47637, 87837, 100567, 103569, 121739, 263511, 301701, 310707, 365217, 905103, 1095651, 2313041, 6939123, 20817369]

約数ペア:

[(1, 20817369), (3, 6939123), (9, 2313041), (19, 1095651), (23, 905103), (57, 365217), (67, 310707), (69, 301701), (79, 263511), (171, 121739), (201, 103569), (207, 100567), (237, 87837), (437, 47637), (603, 34523), (711, 29279), (1273, 16353), (1311, 15879), (1501, 13869), (1541, 13509), (1817, 11457), (3819, 5451), (3933, 5293), (4503, 4623)]