21078528

素因数分解:

$2^9\times 3^1\times {\mathrm{13723}}^1$

素因数の和:13744

約数の個数: 40

約数和(自身を含む): 56158608

約数和(自身を除く): 35080080

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 96, 128, 192, 256, 384, 512, 768, 1536, 13723, 27446, 41169, 54892, 82338, 109784, 164676, 219568, 329352, 439136, 658704, 878272, 1317408, 1756544, 2634816, 3513088, 5269632, 7026176, 10539264, 21078528]

約数ペア:

[(1, 21078528), (2, 10539264), (3, 7026176), (4, 5269632), (6, 3513088), (8, 2634816), (12, 1756544), (16, 1317408), (24, 878272), (32, 658704), (48, 439136), (64, 329352), (96, 219568), (128, 164676), (192, 109784), (256, 82338), (384, 54892), (512, 41169), (768, 27446), (1536, 13723)]