21000816717

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1\times {\mathrm{126047}}^1$

素因数の和:126185

約数の個数: 32

約数和(自身を含む): 30654873600

約数和(自身を除く): 9654056883

約数列:

[1, 3, 19, 37, 57, 79, 111, 237, 703, 1501, 2109, 2923, 4503, 8769, 55537, 126047, 166611, 378141, 2394893, 4663739, 7184679, 9957713, 13991217, 29873139, 88611041, 189196547, 265833123, 368435381, 567589641, 1105306143, 7000272239, 21000816717]

約数ペア:

[(1, 21000816717), (3, 7000272239), (19, 1105306143), (37, 567589641), (57, 368435381), (79, 265833123), (111, 189196547), (237, 88611041), (703, 29873139), (1501, 13991217), (2109, 9957713), (2923, 7184679), (4503, 4663739), (8769, 2394893), (55537, 378141), (126047, 166611)]