21039135

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{4691}}^1$

素因数の和:4735

約数の個数: 32

約数和(自身を含む): 37836288

約数和(自身を除く): 16797153

約数列:

[1, 3, 5, 13, 15, 23, 39, 65, 69, 115, 195, 299, 345, 897, 1495, 4485, 4691, 14073, 23455, 60983, 70365, 107893, 182949, 304915, 323679, 539465, 914745, 1402609, 1618395, 4207827, 7013045, 21039135]

約数ペア:

[(1, 21039135), (3, 7013045), (5, 4207827), (13, 1618395), (15, 1402609), (23, 914745), (39, 539465), (65, 323679), (69, 304915), (115, 182949), (195, 107893), (299, 70365), (345, 60983), (897, 23455), (1495, 14073), (4485, 4691)]