21951748

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{4639}}^1$

素因数の和:4676

約数の個数: 36

約数和(自身を含む): 47550720

約数和(自身を除く): 25598972

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 91, 169, 182, 338, 364, 676, 1183, 2366, 4639, 4732, 9278, 18556, 32473, 60307, 64946, 120614, 129892, 241228, 422149, 783991, 844298, 1567982, 1688596, 3135964, 5487937, 10975874, 21951748]

約数ペア:

[(1, 21951748), (2, 10975874), (4, 5487937), (7, 3135964), (13, 1688596), (14, 1567982), (26, 844298), (28, 783991), (52, 422149), (91, 241228), (169, 129892), (182, 120614), (338, 64946), (364, 60307), (676, 32473), (1183, 18556), (2366, 9278), (4639, 4732)]