20356119

素因数分解:

$3^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{1489}}^1$

素因数の和:1540

約数の個数: 36

約数和(自身を含む): 35330880

約数和(自身を除く): 14974761

約数列:

[1, 3, 7, 9, 21, 31, 49, 63, 93, 147, 217, 279, 441, 651, 1489, 1519, 1953, 4467, 4557, 10423, 13401, 13671, 31269, 46159, 72961, 93807, 138477, 218883, 323113, 415431, 656649, 969339, 2261791, 2908017, 6785373, 20356119]

約数ペア:

[(1, 20356119), (3, 6785373), (7, 2908017), (9, 2261791), (21, 969339), (31, 656649), (49, 415431), (63, 323113), (93, 218883), (147, 138477), (217, 93807), (279, 72961), (441, 46159), (651, 31269), (1489, 13671), (1519, 13401), (1953, 10423), (4467, 4557)]