21528416

素因数分解:

$2^5\times 7^1\times {\mathrm{13}}^1\times {\mathrm{7393}}^1$

素因数の和:7423

約数の個数: 48

約数和(自身を含む): 52172064

約数和(自身を除く): 30643648

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, 7393, 14786, 29572, 51751, 59144, 96109, 103502, 118288, 192218, 207004, 236576, 384436, 414008, 672763, 768872, 828016, 1345526, 1537744, 1656032, 2691052, 3075488, 5382104, 10764208, 21528416]

約数ペア:

[(1, 21528416), (2, 10764208), (4, 5382104), (7, 3075488), (8, 2691052), (13, 1656032), (14, 1537744), (16, 1345526), (26, 828016), (28, 768872), (32, 672763), (52, 414008), (56, 384436), (91, 236576), (104, 207004), (112, 192218), (182, 118288), (208, 103502), (224, 96109), (364, 59144), (416, 51751), (728, 29572), (1456, 14786), (2912, 7393)]