21393008

素因数分解:

$2^4\times 7^2\times {\mathrm{13}}^1\times {\mathrm{2099}}^1$

素因数の和:2134

約数の個数: 60

約数和(自身を含む): 51949800

約数和(自身を除く): 30556792

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 49, 52, 56, 91, 98, 104, 112, 182, 196, 208, 364, 392, 637, 728, 784, 1274, 1456, 2099, 2548, 4198, 5096, 8396, 10192, 14693, 16792, 27287, 29386, 33584, 54574, 58772, 102851, 109148, 117544, 191009, 205702, 218296, 235088, 382018, 411404, 436592, 764036, 822808, 1337063, 1528072, 1645616, 2674126, 3056144, 5348252, 10696504, 21393008]

約数ペア:

[(1, 21393008), (2, 10696504), (4, 5348252), (7, 3056144), (8, 2674126), (13, 1645616), (14, 1528072), (16, 1337063), (26, 822808), (28, 764036), (49, 436592), (52, 411404), (56, 382018), (91, 235088), (98, 218296), (104, 205702), (112, 191009), (182, 117544), (196, 109148), (208, 102851), (364, 58772), (392, 54574), (637, 33584), (728, 29386), (784, 27287), (1274, 16792), (1456, 14693), (2099, 10192), (2548, 8396), (4198, 5096)]