21274540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{6607}}^1$

素因数の和:6646

約数の個数: 48

約数和(自身を含む): 53286912

約数和(自身を除く): 32012372

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 92, 115, 140, 161, 230, 322, 460, 644, 805, 1610, 3220, 6607, 13214, 26428, 33035, 46249, 66070, 92498, 132140, 151961, 184996, 231245, 303922, 462490, 607844, 759805, 924980, 1063727, 1519610, 2127454, 3039220, 4254908, 5318635, 10637270, 21274540]

約数ペア:

[(1, 21274540), (2, 10637270), (4, 5318635), (5, 4254908), (7, 3039220), (10, 2127454), (14, 1519610), (20, 1063727), (23, 924980), (28, 759805), (35, 607844), (46, 462490), (70, 303922), (92, 231245), (115, 184996), (140, 151961), (161, 132140), (230, 92498), (322, 66070), (460, 46249), (644, 33035), (805, 26428), (1610, 13214), (3220, 6607)]