21088215

素因数分解:

$3^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{5039}}^1$

素因数の和:5084

約数の個数: 32

約数和(自身を含む): 38707200

約数和(自身を除く): 17618985

約数列:

[1, 3, 5, 9, 15, 27, 31, 45, 93, 135, 155, 279, 465, 837, 1395, 4185, 5039, 15117, 25195, 45351, 75585, 136053, 156209, 226755, 468627, 680265, 781045, 1405881, 2343135, 4217643, 7029405, 21088215]

約数ペア:

[(1, 21088215), (3, 7029405), (5, 4217643), (9, 2343135), (15, 1405881), (27, 781045), (31, 680265), (45, 468627), (93, 226755), (135, 156209), (155, 136053), (279, 75585), (465, 45351), (837, 25195), (1395, 15117), (4185, 5039)]