20091813

素因数分解:

$3^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{4409}}^1$

素因数の和:4457

約数の個数: 24

約数和(自身を含む): 32175360

約数和(自身を除く): 12083547

約数列:

[1, 3, 7, 21, 31, 49, 93, 147, 217, 651, 1519, 4409, 4557, 13227, 30863, 92589, 136679, 216041, 410037, 648123, 956753, 2870259, 6697271, 20091813]

約数ペア:

[(1, 20091813), (3, 6697271), (7, 2870259), (21, 956753), (31, 648123), (49, 410037), (93, 216041), (147, 136679), (217, 92589), (651, 30863), (1519, 13227), (4409, 4557)]