21553371

素因数分解:

$3^5\times 7^1\times {\mathrm{12671}}^1$

素因数の和:12693

約数の個数: 24

約数和(自身を含む): 36900864

約数和(自身を除く): 15347493

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 243, 567, 1701, 12671, 38013, 88697, 114039, 266091, 342117, 798273, 1026351, 2394819, 3079053, 7184457, 21553371]

約数ペア:

[(1, 21553371), (3, 7184457), (7, 3079053), (9, 2394819), (21, 1026351), (27, 798273), (63, 342117), (81, 266091), (189, 114039), (243, 88697), (567, 38013), (1701, 12671)]