21239264

素因数分解:

$2^5\times {\mathrm{19}}^1\times {\mathrm{181}}^1\times {\mathrm{193}}^1$

素因数の和:403

約数の個数: 48

約数和(自身を含む): 44488080

約数和(自身を除く): 23248816

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 76, 152, 181, 193, 304, 362, 386, 608, 724, 772, 1448, 1544, 2896, 3088, 3439, 3667, 5792, 6176, 6878, 7334, 13756, 14668, 27512, 29336, 34933, 55024, 58672, 69866, 110048, 117344, 139732, 279464, 558928, 663727, 1117856, 1327454, 2654908, 5309816, 10619632, 21239264]

約数ペア:

[(1, 21239264), (2, 10619632), (4, 5309816), (8, 2654908), (16, 1327454), (19, 1117856), (32, 663727), (38, 558928), (76, 279464), (152, 139732), (181, 117344), (193, 110048), (304, 69866), (362, 58672), (386, 55024), (608, 34933), (724, 29336), (772, 27512), (1448, 14668), (1544, 13756), (2896, 7334), (3088, 6878), (3439, 6176), (3667, 5792)]