21820722

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{647}}^1$

素因数の和:743

約数の個数: 64

約数和(自身を含む): 55240704

約数和(自身を除く): 33419982

約数列:

[1, 2, 3, 6, 7, 11, 14, 21, 22, 33, 42, 66, 73, 77, 146, 154, 219, 231, 438, 462, 511, 647, 803, 1022, 1294, 1533, 1606, 1941, 2409, 3066, 3882, 4529, 4818, 5621, 7117, 9058, 11242, 13587, 14234, 16863, 21351, 27174, 33726, 42702, 47231, 49819, 94462, 99638, 141693, 149457, 283386, 298914, 330617, 519541, 661234, 991851, 1039082, 1558623, 1983702, 3117246, 3636787, 7273574, 10910361, 21820722]

約数ペア:

[(1, 21820722), (2, 10910361), (3, 7273574), (6, 3636787), (7, 3117246), (11, 1983702), (14, 1558623), (21, 1039082), (22, 991851), (33, 661234), (42, 519541), (66, 330617), (73, 298914), (77, 283386), (146, 149457), (154, 141693), (219, 99638), (231, 94462), (438, 49819), (462, 47231), (511, 42702), (647, 33726), (803, 27174), (1022, 21351), (1294, 16863), (1533, 14234), (1606, 13587), (1941, 11242), (2409, 9058), (3066, 7117), (3882, 5621), (4529, 4818)]