21125748

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{5351}}^1$

素因数の和:5412

約数の個数: 48

約数和(自身を含む): 57544704

約数和(自身を除く): 36418956

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 47, 84, 94, 141, 188, 282, 329, 564, 658, 987, 1316, 1974, 3948, 5351, 10702, 16053, 21404, 32106, 37457, 64212, 74914, 112371, 149828, 224742, 251497, 449484, 502994, 754491, 1005988, 1508982, 1760479, 3017964, 3520958, 5281437, 7041916, 10562874, 21125748]

約数ペア:

[(1, 21125748), (2, 10562874), (3, 7041916), (4, 5281437), (6, 3520958), (7, 3017964), (12, 1760479), (14, 1508982), (21, 1005988), (28, 754491), (42, 502994), (47, 449484), (84, 251497), (94, 224742), (141, 149828), (188, 112371), (282, 74914), (329, 64212), (564, 37457), (658, 32106), (987, 21404), (1316, 16053), (1974, 10702), (3948, 5351)]