21801104

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{281}}^1\times {\mathrm{373}}^1$

素因数の和:675

約数の個数: 40

約数和(自身を含む): 45773112

約数和(自身を除く): 23972008

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 281, 373, 562, 746, 1124, 1492, 2248, 2984, 3653, 4496, 4849, 5968, 7306, 9698, 14612, 19396, 29224, 38792, 58448, 77584, 104813, 209626, 419252, 838504, 1362569, 1677008, 2725138, 5450276, 10900552, 21801104]

約数ペア:

[(1, 21801104), (2, 10900552), (4, 5450276), (8, 2725138), (13, 1677008), (16, 1362569), (26, 838504), (52, 419252), (104, 209626), (208, 104813), (281, 77584), (373, 58448), (562, 38792), (746, 29224), (1124, 19396), (1492, 14612), (2248, 9698), (2984, 7306), (3653, 5968), (4496, 4849)]