21091616

素因数分解:

$2^5\times 7^1\times {\mathrm{13}}^1\times {\mathrm{7243}}^1$

素因数の和:7273

約数の個数: 48

約数和(自身を含む): 51113664

約数和(自身を除く): 30022048

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 52, 56, 91, 104, 112, 182, 208, 224, 364, 416, 728, 1456, 2912, 7243, 14486, 28972, 50701, 57944, 94159, 101402, 115888, 188318, 202804, 231776, 376636, 405608, 659113, 753272, 811216, 1318226, 1506544, 1622432, 2636452, 3013088, 5272904, 10545808, 21091616]

約数ペア:

[(1, 21091616), (2, 10545808), (4, 5272904), (7, 3013088), (8, 2636452), (13, 1622432), (14, 1506544), (16, 1318226), (26, 811216), (28, 753272), (32, 659113), (52, 405608), (56, 376636), (91, 231776), (104, 202804), (112, 188318), (182, 115888), (208, 101402), (224, 94159), (364, 57944), (416, 50701), (728, 28972), (1456, 14486), (2912, 7243)]