28189881

素因数分解:

$3^2\times {\mathrm{23}}^2\times {\mathrm{31}}^1\times {\mathrm{191}}^1$

素因数の和:274

約数の個数: 36

約数和(自身を含む): 44169216

約数和(自身を除く): 15979335

約数列:

[1, 3, 9, 23, 31, 69, 93, 191, 207, 279, 529, 573, 713, 1587, 1719, 2139, 4393, 4761, 5921, 6417, 13179, 16399, 17763, 39537, 49197, 53289, 101039, 136183, 147591, 303117, 408549, 909351, 1225647, 3132209, 9396627, 28189881]

約数ペア:

[(1, 28189881), (3, 9396627), (9, 3132209), (23, 1225647), (31, 909351), (69, 408549), (93, 303117), (191, 147591), (207, 136183), (279, 101039), (529, 53289), (573, 49197), (713, 39537), (1587, 17763), (1719, 16399), (2139, 13179), (4393, 6417), (4761, 5921)]