21000470456

素因数分解:

$2^3\times 7^1\times {\mathrm{179}}^1\times {\mathrm{211}}^1\times {\mathrm{9929}}^1$

素因数の和:10332

約数の個数: 64

約数和(自身を含む): 45471456000

約数和(自身を除く): 24470985544

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 179, 211, 358, 422, 716, 844, 1253, 1432, 1477, 1688, 2506, 2954, 5012, 5908, 9929, 10024, 11816, 19858, 37769, 39716, 69503, 75538, 79432, 139006, 151076, 264383, 278012, 302152, 528766, 556024, 1057532, 1777291, 2095019, 2115064, 3554582, 4190038, 7109164, 8380076, 12441037, 14218328, 14665133, 16760152, 24882074, 29330266, 49764148, 58660532, 99528296, 117321064, 375008401, 750016802, 1500033604, 2625058807, 3000067208, 5250117614, 10500235228, 21000470456]

約数ペア:

[(1, 21000470456), (2, 10500235228), (4, 5250117614), (7, 3000067208), (8, 2625058807), (14, 1500033604), (28, 750016802), (56, 375008401), (179, 117321064), (211, 99528296), (358, 58660532), (422, 49764148), (716, 29330266), (844, 24882074), (1253, 16760152), (1432, 14665133), (1477, 14218328), (1688, 12441037), (2506, 8380076), (2954, 7109164), (5012, 4190038), (5908, 3554582), (9929, 2115064), (10024, 2095019), (11816, 1777291), (19858, 1057532), (37769, 556024), (39716, 528766), (69503, 302152), (75538, 278012), (79432, 264383), (139006, 151076)]