21086988

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{135173}}^1$

素因数の和:135193

約数の個数: 24

約数和(自身を含む): 52988208

約数和(自身を除く): 31901220

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156, 135173, 270346, 405519, 540692, 811038, 1622076, 1757249, 3514498, 5271747, 7028996, 10543494, 21086988]

約数ペア:

[(1, 21086988), (2, 10543494), (3, 7028996), (4, 5271747), (6, 3514498), (12, 1757249), (13, 1622076), (26, 811038), (39, 540692), (52, 405519), (78, 270346), (156, 135173)]