19742877

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{919}}^1$

素因数の和:974

約数の個数: 48

約数和(自身を含む): 36741120

約数和(自身を除く): 16998243

約数列:

[1, 3, 7, 9, 11, 21, 31, 33, 63, 77, 93, 99, 217, 231, 279, 341, 651, 693, 919, 1023, 1953, 2387, 2757, 3069, 6433, 7161, 8271, 10109, 19299, 21483, 28489, 30327, 57897, 70763, 85467, 90981, 199423, 212289, 256401, 313379, 598269, 636867, 940137, 1794807, 2193653, 2820411, 6580959, 19742877]

約数ペア:

[(1, 19742877), (3, 6580959), (7, 2820411), (9, 2193653), (11, 1794807), (21, 940137), (31, 636867), (33, 598269), (63, 313379), (77, 256401), (93, 212289), (99, 199423), (217, 90981), (231, 85467), (279, 70763), (341, 57897), (651, 30327), (693, 28489), (919, 21483), (1023, 19299), (1953, 10109), (2387, 8271), (2757, 7161), (3069, 6433)]