28189917

素因数分解:

$3^3\times 7^1\times {\mathrm{149153}}^1$

素因数の和:149169

約数の個数: 16

約数和(自身を含む): 47729280

約数和(自身を除く): 19539363

約数列:

[1, 3, 7, 9, 21, 27, 63, 189, 149153, 447459, 1044071, 1342377, 3132213, 4027131, 9396639, 28189917]

約数ペア:

[(1, 28189917), (3, 9396639), (7, 4027131), (9, 3132213), (21, 1342377), (27, 1044071), (63, 447459), (189, 149153)]