19803616

素因数分解:

$2^5\times 7^1\times {\mathrm{211}}^1\times {\mathrm{419}}^1$

素因数の和:647

約数の個数: 48

約数和(自身を含む): 44876160

約数和(自身を除く): 25072544

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 112, 211, 224, 419, 422, 838, 844, 1477, 1676, 1688, 2933, 2954, 3352, 3376, 5866, 5908, 6704, 6752, 11732, 11816, 13408, 23464, 23632, 46928, 47264, 88409, 93856, 176818, 353636, 618863, 707272, 1237726, 1414544, 2475452, 2829088, 4950904, 9901808, 19803616]

約数ペア:

[(1, 19803616), (2, 9901808), (4, 4950904), (7, 2829088), (8, 2475452), (14, 1414544), (16, 1237726), (28, 707272), (32, 618863), (56, 353636), (112, 176818), (211, 93856), (224, 88409), (419, 47264), (422, 46928), (838, 23632), (844, 23464), (1477, 13408), (1676, 11816), (1688, 11732), (2933, 6752), (2954, 6704), (3352, 5908), (3376, 5866)]